/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:50:38,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:50:38,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:50:38,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:50:38,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:50:38,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:50:38,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:50:38,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:50:38,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:50:38,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:50:38,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:50:38,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:50:38,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:50:38,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:50:38,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:50:38,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:50:38,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:50:38,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:50:38,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:50:38,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:50:38,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:50:38,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:50:38,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:50:38,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:50:38,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:50:38,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:50:38,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:50:38,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:50:38,477 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 [2020-07-17 22:50:38,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:50:38,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:50:38,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:50:38,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:50:38,516 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:50:38,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:50:38,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:50:38,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:50:38,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:50:38,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:50:38,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:50:38,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:50:38,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:50:38,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:50:38,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:50:38,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:50:38,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:50:38,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:50:38,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:50:38,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:50:38,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:50:38,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:50:38,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:50:38,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:50:38,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:50:38,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:50:38,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:50:38,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:50:38,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:50:38,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:50:38,786 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:50:38,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:50:38,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:50:38,806 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:50:38,807 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:50:38,808 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-1.c [2020-07-17 22:50:38,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310e14f43/b43f441790794161b26b91472eba0c90/FLAG94536a809 [2020-07-17 22:50:39,294 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:50:39,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c [2020-07-17 22:50:39,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310e14f43/b43f441790794161b26b91472eba0c90/FLAG94536a809 [2020-07-17 22:50:39,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310e14f43/b43f441790794161b26b91472eba0c90 [2020-07-17 22:50:39,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:50:39,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:50:39,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:39,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:50:39,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:50:39,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:39" (1/1) ... [2020-07-17 22:50:39,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4ef7f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:39, skipping insertion in model container [2020-07-17 22:50:39,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:39" (1/1) ... [2020-07-17 22:50:39,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:50:39,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:50:39,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:39,945 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:50:39,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:39,975 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:50:39,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:39 WrapperNode [2020-07-17 22:50:39,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:39,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:50:39,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:50:39,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:50:39,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:39" (1/1) ... [2020-07-17 22:50:39,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:39" (1/1) ... [2020-07-17 22:50:39,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:39" (1/1) ... [2020-07-17 22:50:39,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:39" (1/1) ... [2020-07-17 22:50:39,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:39" (1/1) ... [2020-07-17 22:50:39,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:39" (1/1) ... [2020-07-17 22:50:39,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:39" (1/1) ... [2020-07-17 22:50:40,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:50:40,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:50:40,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:50:40,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:50:40,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:39" (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 [2020-07-17 22:50:40,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:50:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:50:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:50:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:50:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:50:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:50:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:50:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:50:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:50:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:50:40,349 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:50:40,349 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 22:50:40,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:40 BoogieIcfgContainer [2020-07-17 22:50:40,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:50:40,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:50:40,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:50:40,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:50:40,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:50:39" (1/3) ... [2020-07-17 22:50:40,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35929f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:40, skipping insertion in model container [2020-07-17 22:50:40,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:39" (2/3) ... [2020-07-17 22:50:40,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35929f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:40, skipping insertion in model container [2020-07-17 22:50:40,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:40" (3/3) ... [2020-07-17 22:50:40,364 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_03-1.c [2020-07-17 22:50:40,375 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:50:40,384 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:50:40,401 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:50:40,426 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:50:40,426 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:50:40,427 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:50:40,427 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:50:40,427 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:50:40,427 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:50:40,427 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:50:40,427 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:50:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-17 22:50:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:50:40,455 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:40,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:40,457 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:40,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-07-17 22:50:40,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:40,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900256377] [2020-07-17 22:50:40,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:40,697 INFO L280 TraceCheckUtils]: 0: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-17 22:50:40,697 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {22#true} {22#true} #38#return; {22#true} is VALID [2020-07-17 22:50:40,699 INFO L263 TraceCheckUtils]: 0: Hoare triple {22#true} call ULTIMATE.init(); {22#true} is VALID [2020-07-17 22:50:40,700 INFO L280 TraceCheckUtils]: 1: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-17 22:50:40,700 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {22#true} {22#true} #38#return; {22#true} is VALID [2020-07-17 22:50:40,700 INFO L263 TraceCheckUtils]: 3: Hoare triple {22#true} call #t~ret2 := main(); {22#true} is VALID [2020-07-17 22:50:40,701 INFO L280 TraceCheckUtils]: 4: Hoare triple {22#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~x~0 := #t~nondet0;havoc #t~nondet0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~y~0 := #t~nondet1;havoc #t~nondet1; {22#true} is VALID [2020-07-17 22:50:40,703 INFO L280 TraceCheckUtils]: 5: Hoare triple {22#true} assume !(~y~0 > 0); {26#(<= main_~y~0 0)} is VALID [2020-07-17 22:50:40,705 INFO L263 TraceCheckUtils]: 6: Hoare triple {26#(<= main_~y~0 0)} call __VERIFIER_assert((if ~y~0 <= 0 || (~y~0 < 0 && ~x~0 >= 100) then 1 else 0)); {27#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-17 22:50:40,706 INFO L280 TraceCheckUtils]: 7: Hoare triple {27#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {28#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-17 22:50:40,707 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {23#false} is VALID [2020-07-17 22:50:40,707 INFO L280 TraceCheckUtils]: 9: Hoare triple {23#false} assume !false; {23#false} is VALID [2020-07-17 22:50:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:50:40,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900256377] [2020-07-17 22:50:40,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:50:40,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 22:50:40,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937102780] [2020-07-17 22:50:40,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-17 22:50:40,720 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:50:40,724 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-17 22:50:40,750 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:40,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 22:50:40,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:50:40,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 22:50:40,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 22:50:40,763 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2020-07-17 22:50:40,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:40,938 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-07-17 22:50:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 22:50:40,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-17 22:50:40,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:50:40,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:50:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 45 transitions. [2020-07-17 22:50:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:50:40,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 45 transitions. [2020-07-17 22:50:40,957 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 45 transitions. [2020-07-17 22:50:41,029 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:41,040 INFO L225 Difference]: With dead ends: 39 [2020-07-17 22:50:41,040 INFO L226 Difference]: Without dead ends: 12 [2020-07-17 22:50:41,043 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 [2020-07-17 22:50:41,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-17 22:50:41,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-17 22:50:41,078 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:50:41,078 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states. Second operand 12 states. [2020-07-17 22:50:41,079 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-17 22:50:41,079 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-17 22:50:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:41,082 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-17 22:50:41,082 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-17 22:50:41,083 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:41,083 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:41,083 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-17 22:50:41,084 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-17 22:50:41,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:41,086 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-17 22:50:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-17 22:50:41,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:41,087 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:41,087 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:50:41,088 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:50:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-17 22:50:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-17 22:50:41,091 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-17 22:50:41,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:50:41,091 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-17 22:50:41,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 22:50:41,092 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-17 22:50:41,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-17 22:50:41,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:41,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:41,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:50:41,093 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:41,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:41,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1117320769, now seen corresponding path program 1 times [2020-07-17 22:50:41,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:41,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682045449] [2020-07-17 22:50:41,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:50:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:50:41,136 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:50:41,136 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:50:41,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:50:41,157 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:50:41,157 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:50:41,157 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:50:41,158 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:50:41,158 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-17 22:50:41,158 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:50:41,158 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:50:41,158 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:50:41,159 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-17 22:50:41,159 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-17 22:50:41,159 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-17 22:50:41,159 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-17 22:50:41,159 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:50:41,159 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-17 22:50:41,160 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-17 22:50:41,160 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-17 22:50:41,160 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-17 22:50:41,160 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-17 22:50:41,161 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-17 22:50:41,161 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-17 22:50:41,161 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-17 22:50:41,161 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-17 22:50:41,161 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:50:41,161 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:50:41,162 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:50:41,162 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:50:41,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:50:41 BoogieIcfgContainer [2020-07-17 22:50:41,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:50:41,168 INFO L168 Benchmark]: Toolchain (without parser) took 1460.42 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 103.6 MB in the beginning and 106.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:41,169 INFO L168 Benchmark]: CDTParser took 1.32 ms. Allocated memory is still 140.0 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 22:50:41,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.35 ms. Allocated memory is still 140.0 MB. Free memory was 103.2 MB in the beginning and 93.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:41,171 INFO L168 Benchmark]: Boogie Preprocessor took 99.95 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.6 MB in the beginning and 184.0 MB in the end (delta: -90.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:41,172 INFO L168 Benchmark]: RCFGBuilder took 275.87 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 168.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:41,173 INFO L168 Benchmark]: TraceAbstraction took 809.14 ms. Allocated memory is still 203.9 MB. Free memory was 167.4 MB in the beginning and 106.6 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:41,177 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 1.32 ms. Allocated memory is still 140.0 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.35 ms. Allocated memory is still 140.0 MB. Free memory was 103.2 MB in the beginning and 93.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.95 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.6 MB in the beginning and 184.0 MB in the end (delta: -90.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 275.87 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 168.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 809.14 ms. Allocated memory is still 203.9 MB. Free memory was 167.4 MB in the beginning and 106.6 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x=__VERIFIER_nondet_int(); [L14] int y=__VERIFIER_nondet_int(); [L16] COND TRUE y>0 VAL [x=100, y=1] [L18] COND FALSE !(x<100) VAL [x=100, y=1] [L23] CALL __VERIFIER_assert(y<=0 || (y<0 && x>=100)) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 8 SDslu, 48 SDs, 0 SdLazy, 14 SolverSat, 1 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=19occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 153 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 incorrect! Received shutdown request...