/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 0.1.25-46f3038-m [2020-07-08 12:46:05,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 12:46:05,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 12:46:05,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 12:46:05,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 12:46:05,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 12:46:05,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 12:46:05,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 12:46:05,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 12:46:05,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 12:46:05,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 12:46:05,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 12:46:05,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 12:46:05,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 12:46:05,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 12:46:05,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 12:46:05,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 12:46:05,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 12:46:05,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 12:46:05,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 12:46:05,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 12:46:05,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 12:46:05,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 12:46:05,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 12:46:05,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 12:46:05,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 12:46:05,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 12:46:05,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 12:46:05,473 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 [2020-07-08 12:46:05,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 12:46:05,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 12:46:05,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-08 12:46:05,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-08 12:46:05,493 INFO L138 SettingsManager]: * Use SBE=true [2020-07-08 12:46:05,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 12:46:05,493 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 12:46:05,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 12:46:05,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 12:46:05,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 12:46:05,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 12:46:05,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 12:46:05,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 12:46:05,495 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 12:46:05,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 12:46:05,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 12:46:05,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 12:46:05,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 12:46:05,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-08 12:46:05,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 12:46:05,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 12:46:05,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 12:46:05,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 12:46:05,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-08 12:46:05,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-08 12:46:05,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-08 12:46:05,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-08 12:46:05,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 12:46:05,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-08 12:46:05,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-08 12:46:05,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 12:46:05,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 12:46:05,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 12:46:05,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 12:46:05,909 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 12:46:05,910 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-1.c [2020-07-08 12:46:06,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088157a66/e8521376b6bf4fe9aa9f66f60483f553/FLAG3ad978ea7 [2020-07-08 12:46:06,613 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 12:46:06,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c [2020-07-08 12:46:06,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088157a66/e8521376b6bf4fe9aa9f66f60483f553/FLAG3ad978ea7 [2020-07-08 12:46:06,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088157a66/e8521376b6bf4fe9aa9f66f60483f553 [2020-07-08 12:46:06,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 12:46:06,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 12:46:06,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 12:46:06,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 12:46:06,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 12:46:06,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:46:06" (1/1) ... [2020-07-08 12:46:06,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69fe8523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:06, skipping insertion in model container [2020-07-08 12:46:06,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:46:06" (1/1) ... [2020-07-08 12:46:06,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 12:46:06,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 12:46:07,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:46:07,160 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 12:46:07,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:46:07,198 INFO L208 MainTranslator]: Completed translation [2020-07-08 12:46:07,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:07 WrapperNode [2020-07-08 12:46:07,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 12:46:07,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 12:46:07,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 12:46:07,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 12:46:07,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:07" (1/1) ... [2020-07-08 12:46:07,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:07" (1/1) ... [2020-07-08 12:46:07,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:07" (1/1) ... [2020-07-08 12:46:07,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:07" (1/1) ... [2020-07-08 12:46:07,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:07" (1/1) ... [2020-07-08 12:46:07,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:07" (1/1) ... [2020-07-08 12:46:07,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:07" (1/1) ... [2020-07-08 12:46:07,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 12:46:07,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 12:46:07,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 12:46:07,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 12:46:07,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:07" (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 12:46:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 12:46:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 12:46:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 12:46:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 12:46:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 12:46:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 12:46:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 12:46:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 12:46:07,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 12:46:07,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 12:46:07,671 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 12:46:07,672 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-08 12:46:07,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:46:07 BoogieIcfgContainer [2020-07-08 12:46:07,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 12:46:07,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 12:46:07,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 12:46:07,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 12:46:07,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 12:46:06" (1/3) ... [2020-07-08 12:46:07,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef9b6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:46:07, skipping insertion in model container [2020-07-08 12:46:07,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:07" (2/3) ... [2020-07-08 12:46:07,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef9b6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:46:07, skipping insertion in model container [2020-07-08 12:46:07,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:46:07" (3/3) ... [2020-07-08 12:46:07,694 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_03-1.c [2020-07-08 12:46:07,710 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-08 12:46:07,719 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 12:46:07,739 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 12:46:07,787 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 12:46:07,787 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 12:46:07,787 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-08 12:46:07,788 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 12:46:07,788 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 12:46:07,788 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 12:46:07,788 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 12:46:07,791 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 12:46:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-08 12:46:07,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-08 12:46:07,824 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:46:07,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:46:07,826 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:46:07,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:46:07,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-07-08 12:46:07,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:46:07,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417576236] [2020-07-08 12:46:07,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:46:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:46:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:46:08,111 INFO L280 TraceCheckUtils]: 0: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-08 12:46:08,112 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {22#true} {22#true} #38#return; {22#true} is VALID [2020-07-08 12:46:08,114 INFO L263 TraceCheckUtils]: 0: Hoare triple {22#true} call ULTIMATE.init(); {22#true} is VALID [2020-07-08 12:46:08,115 INFO L280 TraceCheckUtils]: 1: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-08 12:46:08,115 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {22#true} {22#true} #38#return; {22#true} is VALID [2020-07-08 12:46:08,116 INFO L263 TraceCheckUtils]: 3: Hoare triple {22#true} call #t~ret2 := main(); {22#true} is VALID [2020-07-08 12:46:08,116 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 [2020-07-08 12:46:08,118 INFO L280 TraceCheckUtils]: 5: Hoare triple {22#true} assume !(~y~0 > 0); {26#(<= main_~y~0 0)} is VALID [2020-07-08 12:46:08,120 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 [2020-07-08 12:46:08,122 INFO L280 TraceCheckUtils]: 7: Hoare triple {27#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {28#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 12:46:08,125 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {23#false} is VALID [2020-07-08 12:46:08,125 INFO L280 TraceCheckUtils]: 9: Hoare triple {23#false} assume !false; {23#false} is VALID [2020-07-08 12:46:08,127 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 12:46:08,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417576236] [2020-07-08 12:46:08,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:46:08,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 12:46:08,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382471449] [2020-07-08 12:46:08,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-08 12:46:08,139 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:46:08,143 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-08 12:46:08,176 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:46:08,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-08 12:46:08,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:46:08,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-08 12:46:08,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-08 12:46:08,189 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2020-07-08 12:46:08,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:46:08,423 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-07-08 12:46:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-08 12:46:08,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-08 12:46:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:46:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 12:46:08,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 45 transitions. [2020-07-08 12:46:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 12:46:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 45 transitions. [2020-07-08 12:46:08,444 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 45 transitions. [2020-07-08 12:46:08,522 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:46:08,535 INFO L225 Difference]: With dead ends: 39 [2020-07-08 12:46:08,535 INFO L226 Difference]: Without dead ends: 12 [2020-07-08 12:46:08,539 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 12:46:08,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-08 12:46:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-08 12:46:08,586 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:46:08,586 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states. Second operand 12 states. [2020-07-08 12:46:08,587 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-08 12:46:08,588 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-08 12:46:08,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:46:08,591 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-08 12:46:08,591 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-08 12:46:08,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:46:08,592 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:46:08,592 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-08 12:46:08,592 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-08 12:46:08,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:46:08,595 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-08 12:46:08,595 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-08 12:46:08,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:46:08,596 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:46:08,596 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:46:08,597 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:46:08,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-08 12:46:08,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-08 12:46:08,600 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-08 12:46:08,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:46:08,601 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-08 12:46:08,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-08 12:46:08,601 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-08 12:46:08,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-08 12:46:08,602 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:46:08,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:46:08,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 12:46:08,603 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:46:08,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:46:08,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1117320769, now seen corresponding path program 1 times [2020-07-08 12:46:08,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:46:08,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273508863] [2020-07-08 12:46:08,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:46:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 12:46:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 12:46:08,661 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-08 12:46:08,661 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-08 12:46:08,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 12:46:08,691 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-08 12:46:08,691 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 12:46:08,691 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 12:46:08,691 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-08 12:46:08,691 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-08 12:46:08,692 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-08 12:46:08,692 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 12:46:08,692 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 12:46:08,692 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-08 12:46:08,692 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-08 12:46:08,692 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-08 12:46:08,693 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-08 12:46:08,693 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 12:46:08,693 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-08 12:46:08,693 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-08 12:46:08,693 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-08 12:46:08,694 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-08 12:46:08,694 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-08 12:46:08,694 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 12:46:08,694 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 12:46:08,694 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-08 12:46:08,695 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-08 12:46:08,695 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-08 12:46:08,695 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-08 12:46:08,695 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-08 12:46:08,695 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. [2020-07-08 12:46:08,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 12:46:08 BoogieIcfgContainer [2020-07-08 12:46:08,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 12:46:08,702 INFO L168 Benchmark]: Toolchain (without parser) took 1805.62 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 101.2 MB in the beginning and 104.2 MB in the end (delta: -3.0 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2020-07-08 12:46:08,704 INFO L168 Benchmark]: CDTParser took 2.07 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-08 12:46:08,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.47 ms. Allocated memory is still 136.8 MB. Free memory was 100.8 MB in the beginning and 91.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-08 12:46:08,706 INFO L168 Benchmark]: Boogie Preprocessor took 38.89 ms. Allocated memory is still 136.8 MB. Free memory was 91.3 MB in the beginning and 89.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-08 12:46:08,707 INFO L168 Benchmark]: RCFGBuilder took 440.53 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 89.9 MB in the beginning and 165.4 MB in the end (delta: -75.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-08 12:46:08,708 INFO L168 Benchmark]: TraceAbstraction took 1017.62 ms. Allocated memory is still 201.3 MB. Free memory was 165.4 MB in the beginning and 104.2 MB in the end (delta: 61.1 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-07-08 12:46:08,712 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 2.07 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.47 ms. Allocated memory is still 136.8 MB. Free memory was 100.8 MB in the beginning and 91.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.89 ms. Allocated memory is still 136.8 MB. Free memory was 91.3 MB in the beginning and 89.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 440.53 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 89.9 MB in the beginning and 165.4 MB in the end (delta: -75.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1017.62 ms. Allocated memory is still 201.3 MB. Free memory was 165.4 MB in the beginning and 104.2 MB in the end (delta: 61.1 MB). Peak memory consumption was 61.1 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: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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...