/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/loops/for_infinite_loop_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 23:36:36,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 23:36:36,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 23:36:36,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 23:36:36,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 23:36:36,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 23:36:36,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 23:36:36,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 23:36:36,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 23:36:36,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 23:36:36,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 23:36:36,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 23:36:36,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 23:36:36,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 23:36:36,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 23:36:36,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 23:36:36,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 23:36:36,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 23:36:36,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 23:36:36,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 23:36:36,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 23:36:36,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 23:36:36,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 23:36:36,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 23:36:36,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 23:36:36,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-08 23:36:36,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-08 23:36:36,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-08 23:36:36,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-08 23:36:36,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-08 23:36:36,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-08 23:36:36,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-08 23:36:36,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-08 23:36:36,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 23:36:36,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 23:36:36,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 23:36:36,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 23:36:36,592 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 23:36:36,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 23:36:36,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 23:36:36,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 23:36:36,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 23:36:36,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 23:36:36,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 23:36:36,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 23:36:36,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 23:36:36,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 23:36:36,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 23:36:36,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 23:36:36,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 23:36:36,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 23:36:36,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 23:36:36,602 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 23:36:36,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 23:36:36,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 23:36:36,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 23:36:36,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 23:36:36,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 23:36:36,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 23:36:36,605 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 [2020-07-08 23:36:36,893 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 23:36:36,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 23:36:36,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 23:36:36,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 23:36:36,913 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 23:36:36,914 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_infinite_loop_2.c [2020-07-08 23:36:36,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c9554e66/3c6d6e81031d474cb0872c935277179d/FLAG53e5df4c4 [2020-07-08 23:36:37,507 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 23:36:37,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_infinite_loop_2.c [2020-07-08 23:36:37,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c9554e66/3c6d6e81031d474cb0872c935277179d/FLAG53e5df4c4 [2020-07-08 23:36:37,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c9554e66/3c6d6e81031d474cb0872c935277179d [2020-07-08 23:36:37,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 23:36:37,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 23:36:37,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 23:36:37,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 23:36:37,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 23:36:37,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:36:37" (1/1) ... [2020-07-08 23:36:37,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1baf0cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:37, skipping insertion in model container [2020-07-08 23:36:37,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:36:37" (1/1) ... [2020-07-08 23:36:37,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 23:36:37,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 23:36:38,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 23:36:38,083 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 23:36:38,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 23:36:38,119 INFO L208 MainTranslator]: Completed translation [2020-07-08 23:36:38,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:38 WrapperNode [2020-07-08 23:36:38,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 23:36:38,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 23:36:38,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 23:36:38,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 23:36:38,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:38" (1/1) ... [2020-07-08 23:36:38,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:38" (1/1) ... [2020-07-08 23:36:38,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:38" (1/1) ... [2020-07-08 23:36:38,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:38" (1/1) ... [2020-07-08 23:36:38,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:38" (1/1) ... [2020-07-08 23:36:38,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:38" (1/1) ... [2020-07-08 23:36:38,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:38" (1/1) ... [2020-07-08 23:36:38,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 23:36:38,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 23:36:38,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 23:36:38,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 23:36:38,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:38" (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 [2020-07-08 23:36:38,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 23:36:38,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 23:36:38,319 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-08 23:36:38,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 23:36:38,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 23:36:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 23:36:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-08 23:36:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-08 23:36:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 23:36:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 23:36:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 23:36:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 23:36:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 23:36:38,598 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 23:36:38,599 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-08 23:36:38,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:36:38 BoogieIcfgContainer [2020-07-08 23:36:38,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 23:36:38,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 23:36:38,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 23:36:38,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 23:36:38,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 11:36:37" (1/3) ... [2020-07-08 23:36:38,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b37328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:36:38, skipping insertion in model container [2020-07-08 23:36:38,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:38" (2/3) ... [2020-07-08 23:36:38,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b37328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:36:38, skipping insertion in model container [2020-07-08 23:36:38,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:36:38" (3/3) ... [2020-07-08 23:36:38,616 INFO L109 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_2.c [2020-07-08 23:36:38,631 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 23:36:38,640 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 23:36:38,663 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 23:36:38,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 23:36:38,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 23:36:38,699 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-08 23:36:38,699 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 23:36:38,699 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 23:36:38,699 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 23:36:38,707 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 23:36:38,707 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 23:36:38,727 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-08 23:36:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-08 23:36:38,739 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:36:38,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:36:38,741 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:36:38,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:36:38,747 INFO L82 PathProgramCache]: Analyzing trace with hash 390901091, now seen corresponding path program 1 times [2020-07-08 23:36:38,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:36:38,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123189414] [2020-07-08 23:36:38,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:36:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:36:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:36:39,000 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#true} assume true; {32#true} is VALID [2020-07-08 23:36:39,000 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {32#true} {32#true} #55#return; {32#true} is VALID [2020-07-08 23:36:39,002 INFO L263 TraceCheckUtils]: 0: Hoare triple {32#true} call ULTIMATE.init(); {32#true} is VALID [2020-07-08 23:36:39,003 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#true} assume true; {32#true} is VALID [2020-07-08 23:36:39,003 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {32#true} {32#true} #55#return; {32#true} is VALID [2020-07-08 23:36:39,003 INFO L263 TraceCheckUtils]: 3: Hoare triple {32#true} call #t~ret2 := main(); {32#true} is VALID [2020-07-08 23:36:39,004 INFO L280 TraceCheckUtils]: 4: Hoare triple {32#true} ~i~0 := 0; {32#true} is VALID [2020-07-08 23:36:39,005 INFO L280 TraceCheckUtils]: 5: Hoare triple {32#true} ~x~0 := 0; {36#(= 0 main_~x~0)} is VALID [2020-07-08 23:36:39,007 INFO L280 TraceCheckUtils]: 6: Hoare triple {36#(= 0 main_~x~0)} ~y~0 := 0; {36#(= 0 main_~x~0)} is VALID [2020-07-08 23:36:39,008 INFO L280 TraceCheckUtils]: 7: Hoare triple {36#(= 0 main_~x~0)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {36#(= 0 main_~x~0)} is VALID [2020-07-08 23:36:39,009 INFO L280 TraceCheckUtils]: 8: Hoare triple {36#(= 0 main_~x~0)} ~n~0 := #t~nondet0; {36#(= 0 main_~x~0)} is VALID [2020-07-08 23:36:39,010 INFO L280 TraceCheckUtils]: 9: Hoare triple {36#(= 0 main_~x~0)} havoc #t~nondet0; {36#(= 0 main_~x~0)} is VALID [2020-07-08 23:36:39,012 INFO L280 TraceCheckUtils]: 10: Hoare triple {36#(= 0 main_~x~0)} assume !!(~n~0 > 0); {36#(= 0 main_~x~0)} is VALID [2020-07-08 23:36:39,022 INFO L280 TraceCheckUtils]: 11: Hoare triple {36#(= 0 main_~x~0)} ~i~0 := 0; {36#(= 0 main_~x~0)} is VALID [2020-07-08 23:36:39,023 INFO L280 TraceCheckUtils]: 12: Hoare triple {36#(= 0 main_~x~0)} assume !false; {36#(= 0 main_~x~0)} is VALID [2020-07-08 23:36:39,026 INFO L263 TraceCheckUtils]: 13: Hoare triple {36#(= 0 main_~x~0)} call __VERIFIER_assert((if 0 == ~x~0 then 1 else 0)); {37#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 23:36:39,028 INFO L280 TraceCheckUtils]: 14: Hoare triple {37#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {38#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 23:36:39,029 INFO L280 TraceCheckUtils]: 15: Hoare triple {38#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {33#false} is VALID [2020-07-08 23:36:39,029 INFO L280 TraceCheckUtils]: 16: Hoare triple {33#false} assume !false; {33#false} is VALID [2020-07-08 23:36:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 23:36:39,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123189414] [2020-07-08 23:36:39,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:36:39,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 23:36:39,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990847714] [2020-07-08 23:36:39,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-08 23:36:39,047 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:36:39,051 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-08 23:36:39,101 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:36:39,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-08 23:36:39,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:36:39,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-08 23:36:39,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-08 23:36:39,116 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-07-08 23:36:39,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:36:39,342 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-07-08 23:36:39,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-08 23:36:39,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-08 23:36:39,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:36:39,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 23:36:39,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2020-07-08 23:36:39,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 23:36:39,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2020-07-08 23:36:39,362 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 49 transitions. [2020-07-08 23:36:39,440 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:36:39,447 INFO L225 Difference]: With dead ends: 42 [2020-07-08 23:36:39,448 INFO L226 Difference]: Without dead ends: 0 [2020-07-08 23:36:39,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-08 23:36:39,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-08 23:36:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-08 23:36:39,481 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:36:39,482 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-08 23:36:39,482 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 23:36:39,482 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 23:36:39,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:36:39,483 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 23:36:39,484 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 23:36:39,484 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:36:39,484 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:36:39,484 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 23:36:39,485 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 23:36:39,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:36:39,485 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 23:36:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 23:36:39,486 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:36:39,486 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:36:39,486 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:36:39,487 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:36:39,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-08 23:36:39,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-08 23:36:39,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-07-08 23:36:39,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:36:39,490 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-08 23:36:39,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-08 23:36:39,490 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-08 23:36:39,490 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:36:39,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 23:36:39,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:36:39,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 23:36:39,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-08 23:36:39,705 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-08 23:36:39,706 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-08 23:36:39,706 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-08 23:36:39,706 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-08 23:36:39,706 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-08 23:36:39,707 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-08 23:36:39,707 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-08 23:36:39,707 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-08 23:36:39,707 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-07-08 23:36:39,707 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-07-08 23:36:39,707 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-08 23:36:39,708 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 16 26) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,708 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,708 INFO L264 CegarLoopResult]: At program point L23-1(lines 21 24) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,708 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,708 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,709 INFO L264 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,709 INFO L264 CegarLoopResult]: At program point L21-3(line 21) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,709 INFO L264 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,709 INFO L264 CegarLoopResult]: At program point L21-4(line 21) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,709 INFO L264 CegarLoopResult]: At program point L21-5(lines 21 24) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,710 INFO L264 CegarLoopResult]: At program point L21-6(lines 21 24) the Hoare annotation is: false [2020-07-08 23:36:39,710 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 16 26) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,710 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 26) the Hoare annotation is: true [2020-07-08 23:36:39,710 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,710 INFO L264 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,711 INFO L271 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-07-08 23:36:39,711 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (= 0 main_~x~0) [2020-07-08 23:36:39,711 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 12) the Hoare annotation is: true [2020-07-08 23:36:39,711 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 7 12) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-08 23:36:39,711 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-08 23:36:39,712 INFO L264 CegarLoopResult]: At program point L8(lines 8 10) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-08 23:36:39,712 INFO L264 CegarLoopResult]: At program point L8-2(lines 7 12) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-08 23:36:39,712 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-08 23:36:39,717 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-08 23:36:39,718 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 23:36:39,718 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 23:36:39,720 WARN L170 areAnnotationChecker]: L5-1 has no Hoare annotation [2020-07-08 23:36:39,720 WARN L170 areAnnotationChecker]: L5-3 has no Hoare annotation [2020-07-08 23:36:39,729 INFO L163 areAnnotationChecker]: CFG has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 23:36:39,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 11:36:39 BoogieIcfgContainer [2020-07-08 23:36:39,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 23:36:39,747 INFO L168 Benchmark]: Toolchain (without parser) took 1886.68 ms. Allocated memory was 137.9 MB in the beginning and 234.4 MB in the end (delta: 96.5 MB). Free memory was 101.7 MB in the beginning and 192.2 MB in the end (delta: -90.5 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. [2020-07-08 23:36:39,749 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 137.9 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-08 23:36:39,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.86 ms. Allocated memory is still 137.9 MB. Free memory was 101.5 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-08 23:36:39,751 INFO L168 Benchmark]: Boogie Preprocessor took 129.07 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 91.9 MB in the beginning and 181.6 MB in the end (delta: -89.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-08 23:36:39,752 INFO L168 Benchmark]: RCFGBuilder took 354.56 ms. Allocated memory is still 202.4 MB. Free memory was 181.6 MB in the beginning and 164.7 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-07-08 23:36:39,753 INFO L168 Benchmark]: TraceAbstraction took 1137.92 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 164.0 MB in the beginning and 192.2 MB in the end (delta: -28.2 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-07-08 23:36:39,758 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 0.86 ms. Allocated memory is still 137.9 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.86 ms. Allocated memory is still 137.9 MB. Free memory was 101.5 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.07 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 91.9 MB in the beginning and 181.6 MB in the end (delta: -89.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 354.56 ms. Allocated memory is still 202.4 MB. Free memory was 181.6 MB in the beginning and 164.7 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1137.92 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 164.0 MB in the beginning and 192.2 MB in the end (delta: -28.2 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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: 21]: Loop Invariant Derived loop invariant: 0 == x - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 0 == x - ProcedureContractResult [Line: 7]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 0 == \old(cond) || !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 11 SDslu, 52 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 29 LocationsWithAnnotation, 41 PreInvPairs, 52 NumberOfFragments, 82 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 29 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 608 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...