/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_union.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-11 01:07:38,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-11 01:07:38,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-11 01:07:38,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-11 01:07:38,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-11 01:07:38,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-11 01:07:38,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-11 01:07:38,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-11 01:07:38,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-11 01:07:38,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-11 01:07:38,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-11 01:07:38,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-11 01:07:38,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-11 01:07:38,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-11 01:07:38,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-11 01:07:38,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-11 01:07:38,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-11 01:07:38,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-11 01:07:38,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-11 01:07:38,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-11 01:07:38,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-11 01:07:38,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-11 01:07:38,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-11 01:07:38,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-11 01:07:38,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-11 01:07:38,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-11 01:07:38,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-11 01:07:38,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-11 01:07:38,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-11 01:07:38,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-11 01:07:38,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-11 01:07:38,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-11 01:07:38,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-11 01:07:38,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-11 01:07:38,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-11 01:07:38,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-11 01:07:38,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-11 01:07:38,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-11 01:07:38,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-11 01:07:38,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-11 01:07:38,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-11 01:07:38,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-11 01:07:38,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-11 01:07:38,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-11 01:07:38,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-11 01:07:38,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-11 01:07:38,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-11 01:07:38,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-11 01:07:38,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-11 01:07:38,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-11 01:07:38,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-11 01:07:38,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-11 01:07:38,667 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-11 01:07:38,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-11 01:07:38,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-11 01:07:38,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 01:07:38,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-11 01:07:38,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-11 01:07:38,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-11 01:07:38,668 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-11 01:07:39,039 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-11 01:07:39,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-11 01:07:39,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-11 01:07:39,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-11 01:07:39,067 INFO L275 PluginConnector]: CDTParser initialized [2020-07-11 01:07:39,067 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_union.i [2020-07-11 01:07:39,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec9d9dc52/a7275884f8d64cbba074a0cf36c9a5fb/FLAG903c43bc8 [2020-07-11 01:07:39,612 INFO L306 CDTParser]: Found 1 translation units. [2020-07-11 01:07:39,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_union.i [2020-07-11 01:07:39,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec9d9dc52/a7275884f8d64cbba074a0cf36c9a5fb/FLAG903c43bc8 [2020-07-11 01:07:39,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec9d9dc52/a7275884f8d64cbba074a0cf36c9a5fb [2020-07-11 01:07:39,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-11 01:07:39,994 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-11 01:07:39,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-11 01:07:39,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-11 01:07:40,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-11 01:07:40,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 01:07:39" (1/1) ... [2020-07-11 01:07:40,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2caf0155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:40, skipping insertion in model container [2020-07-11 01:07:40,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 01:07:39" (1/1) ... [2020-07-11 01:07:40,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-11 01:07:40,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-11 01:07:40,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 01:07:40,346 INFO L203 MainTranslator]: Completed pre-run [2020-07-11 01:07:40,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 01:07:40,410 INFO L208 MainTranslator]: Completed translation [2020-07-11 01:07:40,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:40 WrapperNode [2020-07-11 01:07:40,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-11 01:07:40,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-11 01:07:40,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-11 01:07:40,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-11 01:07:40,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:40" (1/1) ... [2020-07-11 01:07:40,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:40" (1/1) ... [2020-07-11 01:07:40,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:40" (1/1) ... [2020-07-11 01:07:40,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:40" (1/1) ... [2020-07-11 01:07:40,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:40" (1/1) ... [2020-07-11 01:07:40,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:40" (1/1) ... [2020-07-11 01:07:40,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:40" (1/1) ... [2020-07-11 01:07:40,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-11 01:07:40,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-11 01:07:40,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-11 01:07:40,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-11 01:07:40,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:40" (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 [2020-07-11 01:07:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-11 01:07:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-11 01:07:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-11 01:07:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-11 01:07:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-11 01:07:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-11 01:07:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-11 01:07:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-11 01:07:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-11 01:07:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-11 01:07:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-11 01:07:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-11 01:07:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-11 01:07:40,834 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-11 01:07:40,835 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-11 01:07:40,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 01:07:40 BoogieIcfgContainer [2020-07-11 01:07:40,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-11 01:07:40,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-11 01:07:40,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-11 01:07:40,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-11 01:07:40,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 01:07:39" (1/3) ... [2020-07-11 01:07:40,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f32388c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 01:07:40, skipping insertion in model container [2020-07-11 01:07:40,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:40" (2/3) ... [2020-07-11 01:07:40,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f32388c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 01:07:40, skipping insertion in model container [2020-07-11 01:07:40,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 01:07:40" (3/3) ... [2020-07-11 01:07:40,850 INFO L109 eAbstractionObserver]: Analyzing ICFG test_union.i [2020-07-11 01:07:40,863 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-11 01:07:40,872 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-11 01:07:40,895 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-11 01:07:40,940 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-11 01:07:40,941 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-11 01:07:40,941 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-11 01:07:40,941 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-11 01:07:40,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-11 01:07:40,944 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-11 01:07:40,944 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-11 01:07:40,944 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-11 01:07:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-11 01:07:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-11 01:07:41,007 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 01:07:41,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 01:07:41,011 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 01:07:41,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 01:07:41,029 INFO L82 PathProgramCache]: Analyzing trace with hash 242998920, now seen corresponding path program 1 times [2020-07-11 01:07:41,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 01:07:41,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775235177] [2020-07-11 01:07:41,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 01:07:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 01:07:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 01:07:41,344 INFO L280 TraceCheckUtils]: 0: Hoare triple {35#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {26#true} is VALID [2020-07-11 01:07:41,344 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} #valid := #valid[0 := 0]; {26#true} is VALID [2020-07-11 01:07:41,345 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#true} assume 0 < #StackHeapBarrier; {26#true} is VALID [2020-07-11 01:07:41,345 INFO L280 TraceCheckUtils]: 3: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-11 01:07:41,346 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {26#true} {26#true} #25#return; {26#true} is VALID [2020-07-11 01:07:41,350 INFO L263 TraceCheckUtils]: 0: Hoare triple {26#true} call ULTIMATE.init(); {35#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-11 01:07:41,351 INFO L280 TraceCheckUtils]: 1: Hoare triple {35#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {26#true} is VALID [2020-07-11 01:07:41,351 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#true} #valid := #valid[0 := 0]; {26#true} is VALID [2020-07-11 01:07:41,352 INFO L280 TraceCheckUtils]: 3: Hoare triple {26#true} assume 0 < #StackHeapBarrier; {26#true} is VALID [2020-07-11 01:07:41,352 INFO L280 TraceCheckUtils]: 4: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-11 01:07:41,352 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {26#true} {26#true} #25#return; {26#true} is VALID [2020-07-11 01:07:41,353 INFO L263 TraceCheckUtils]: 6: Hoare triple {26#true} call #t~ret1 := main(); {26#true} is VALID [2020-07-11 01:07:41,353 INFO L280 TraceCheckUtils]: 7: Hoare triple {26#true} SUMMARY for call ~#x~0.base, ~#x~0.offset := #Ultimate.allocOnStack(4); srcloc: mainENTRY {26#true} is VALID [2020-07-11 01:07:41,356 INFO L280 TraceCheckUtils]: 8: Hoare triple {26#true} SUMMARY for call write~int(0, ~#x~0.base, ~#x~0.offset, 4); srcloc: L24 {33#(= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|))} is VALID [2020-07-11 01:07:41,359 INFO L280 TraceCheckUtils]: 9: Hoare triple {33#(= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|))} SUMMARY for call #t~mem0 := read~int(~#x~0.base, ~#x~0.offset, 4); srcloc: L25 {34#(= 0 |main_#t~mem0|)} is VALID [2020-07-11 01:07:41,360 INFO L280 TraceCheckUtils]: 10: Hoare triple {34#(= 0 |main_#t~mem0|)} assume !(0 == #t~mem0); {27#false} is VALID [2020-07-11 01:07:41,361 INFO L263 TraceCheckUtils]: 11: Hoare triple {27#false} call __blast_assert(); {27#false} is VALID [2020-07-11 01:07:41,361 INFO L280 TraceCheckUtils]: 12: Hoare triple {27#false} assume !false; {27#false} is VALID [2020-07-11 01:07:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-11 01:07:41,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775235177] [2020-07-11 01:07:41,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-11 01:07:41,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-11 01:07:41,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075323878] [2020-07-11 01:07:41,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-11 01:07:41,378 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-11 01:07:41,383 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-11 01:07:41,422 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:07:41,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-11 01:07:41,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-11 01:07:41,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-11 01:07:41,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-11 01:07:41,436 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2020-07-11 01:07:41,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:07:41,737 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2020-07-11 01:07:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-11 01:07:41,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-11 01:07:41,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-11 01:07:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-11 01:07:41,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2020-07-11 01:07:41,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-11 01:07:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2020-07-11 01:07:41,760 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 29 transitions. [2020-07-11 01:07:41,811 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:07:41,818 INFO L225 Difference]: With dead ends: 30 [2020-07-11 01:07:41,819 INFO L226 Difference]: Without dead ends: 0 [2020-07-11 01:07:41,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-11 01:07:41,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-11 01:07:41,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-11 01:07:41,847 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-11 01:07:41,848 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-11 01:07:41,848 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-11 01:07:41,848 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-11 01:07:41,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:07:41,849 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-11 01:07:41,849 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-11 01:07:41,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 01:07:41,850 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 01:07:41,850 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-11 01:07:41,850 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-11 01:07:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:07:41,851 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-11 01:07:41,851 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-11 01:07:41,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 01:07:41,851 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 01:07:41,851 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-11 01:07:41,852 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-11 01:07:41,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-11 01:07:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-11 01:07:41,854 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-11 01:07:41,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-11 01:07:41,854 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-11 01:07:41,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-11 01:07:41,855 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-11 01:07:41,855 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:07:41,855 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-11 01:07:41,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 01:07:41,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-11 01:07:41,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-11 01:07:42,058 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-11 01:07:42,058 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-11 01:07:42,059 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-11 01:07:42,059 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-11 01:07:42,059 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-11 01:07:42,059 INFO L271 CegarLoopResult]: At program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) the Hoare annotation is: true [2020-07-11 01:07:42,060 INFO L271 CegarLoopResult]: At program point __blast_assertEXIT(lines 4 7) the Hoare annotation is: true [2020-07-11 01:07:42,060 INFO L271 CegarLoopResult]: At program point __blast_assertFINAL(lines 4 7) the Hoare annotation is: true [2020-07-11 01:07:42,060 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-11 01:07:42,060 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-11 01:07:42,061 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-11 01:07:42,061 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-11 01:07:42,061 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-11 01:07:42,063 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 23 31) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-11 01:07:42,063 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) (= 0 |main_#t~mem0|)) [2020-07-11 01:07:42,063 INFO L264 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: false [2020-07-11 01:07:42,065 INFO L264 CegarLoopResult]: At program point L29-3(line 29) the Hoare annotation is: (and (= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) (= 0 |main_#t~mem0|)) [2020-07-11 01:07:42,068 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) [2020-07-11 01:07:42,068 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 23 31) the Hoare annotation is: true [2020-07-11 01:07:42,069 INFO L271 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-07-11 01:07:42,069 INFO L264 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: (= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) [2020-07-11 01:07:42,070 INFO L264 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: (= 0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) [2020-07-11 01:07:42,070 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 23 31) the Hoare annotation is: true [2020-07-11 01:07:42,093 INFO L163 areAnnotationChecker]: CFG has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-11 01:07:42,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 01:07:42 BoogieIcfgContainer [2020-07-11 01:07:42,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-11 01:07:42,118 INFO L168 Benchmark]: Toolchain (without parser) took 2121.18 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 103.2 MB in the beginning and 90.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 76.0 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:42,119 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-11 01:07:42,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.38 ms. Allocated memory is still 137.4 MB. Free memory was 103.0 MB in the beginning and 92.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:42,123 INFO L168 Benchmark]: Boogie Preprocessor took 36.78 ms. Allocated memory is still 137.4 MB. Free memory was 92.8 MB in the beginning and 91.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:42,124 INFO L168 Benchmark]: RCFGBuilder took 390.93 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 91.2 MB in the beginning and 165.4 MB in the end (delta: -74.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:42,126 INFO L168 Benchmark]: TraceAbstraction took 1271.06 ms. Allocated memory is still 200.8 MB. Free memory was 164.7 MB in the beginning and 91.3 MB in the end (delta: 73.3 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:42,129 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 413.38 ms. Allocated memory is still 137.4 MB. Free memory was 103.0 MB in the beginning and 92.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.78 ms. Allocated memory is still 137.4 MB. Free memory was 92.8 MB in the beginning and 91.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 390.93 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 91.2 MB in the beginning and 165.4 MB in the end (delta: -74.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1271.06 ms. Allocated memory is still 200.8 MB. Free memory was 164.7 MB in the beginning and 91.3 MB in the end (delta: 73.3 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 - ProcedureContractResult [Line: 4]: Procedure Contract for __blast_assert Derived contract for procedure __blast_assert: 1 - ProcedureContractResult [Line: 23]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 5 SDslu, 27 SDs, 0 SdLazy, 19 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 23 LocationsWithAnnotation, 23 PreInvPairs, 30 NumberOfFragments, 72 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 23 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 348 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...