/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_02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 15:27:46,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 15:27:46,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 15:27:46,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 15:27:46,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 15:27:46,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 15:27:46,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 15:27:46,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 15:27:46,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 15:27:46,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 15:27:46,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 15:27:46,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 15:27:46,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 15:27:46,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 15:27:46,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 15:27:46,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 15:27:46,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 15:27:46,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 15:27:46,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 15:27:46,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 15:27:46,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 15:27:46,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 15:27:46,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 15:27:46,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 15:27:46,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 15:27:46,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 15:27:46,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 15:27:46,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 15:27:46,962 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 [2020-07-10 15:27:46,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 15:27:46,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 15:27:46,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-10 15:27:47,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-10 15:27:47,000 INFO L138 SettingsManager]: * Use SBE=true [2020-07-10 15:27:47,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 15:27:47,000 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 15:27:47,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 15:27:47,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 15:27:47,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 15:27:47,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 15:27:47,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 15:27:47,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 15:27:47,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 15:27:47,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 15:27:47,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 15:27:47,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 15:27:47,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 15:27:47,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-10 15:27:47,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 15:27:47,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 15:27:47,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 15:27:47,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 15:27:47,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-10 15:27:47,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-10 15:27:47,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-10 15:27:47,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-10 15:27:47,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 15:27:47,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-10 15:27:47,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-10 15:27:47,269 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 15:27:47,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 15:27:47,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 15:27:47,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 15:27:47,286 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 15:27:47,287 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-1.c [2020-07-10 15:27:47,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48bd8f6a7/a170b41fa48c4d2489e51614c9034c0f/FLAG5a625dfa2 [2020-07-10 15:27:47,776 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 15:27:47,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-1.c [2020-07-10 15:27:47,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48bd8f6a7/a170b41fa48c4d2489e51614c9034c0f/FLAG5a625dfa2 [2020-07-10 15:27:48,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48bd8f6a7/a170b41fa48c4d2489e51614c9034c0f [2020-07-10 15:27:48,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 15:27:48,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 15:27:48,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 15:27:48,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 15:27:48,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 15:27:48,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:27:48" (1/1) ... [2020-07-10 15:27:48,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d2123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:48, skipping insertion in model container [2020-07-10 15:27:48,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:27:48" (1/1) ... [2020-07-10 15:27:48,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 15:27:48,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 15:27:48,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:27:48,397 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 15:27:48,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:27:48,429 INFO L208 MainTranslator]: Completed translation [2020-07-10 15:27:48,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:48 WrapperNode [2020-07-10 15:27:48,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 15:27:48,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 15:27:48,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 15:27:48,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 15:27:48,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:48" (1/1) ... [2020-07-10 15:27:48,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:48" (1/1) ... [2020-07-10 15:27:48,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:48" (1/1) ... [2020-07-10 15:27:48,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:48" (1/1) ... [2020-07-10 15:27:48,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:48" (1/1) ... [2020-07-10 15:27:48,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:48" (1/1) ... [2020-07-10 15:27:48,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:48" (1/1) ... [2020-07-10 15:27:48,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 15:27:48,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 15:27:48,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 15:27:48,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 15:27:48,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:48" (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 [2020-07-10 15:27:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 15:27:48,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 15:27:48,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 15:27:48,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 15:27:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 15:27:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 15:27:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 15:27:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-10 15:27:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 15:27:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 15:27:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 15:27:48,846 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 15:27:48,846 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 15:27:48,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:27:48 BoogieIcfgContainer [2020-07-10 15:27:48,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 15:27:48,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 15:27:48,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 15:27:48,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 15:27:48,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 03:27:48" (1/3) ... [2020-07-10 15:27:48,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4538ea77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:27:48, skipping insertion in model container [2020-07-10 15:27:48,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:48" (2/3) ... [2020-07-10 15:27:48,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4538ea77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:27:48, skipping insertion in model container [2020-07-10 15:27:48,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:27:48" (3/3) ... [2020-07-10 15:27:48,859 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2020-07-10 15:27:48,870 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-10 15:27:48,878 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 15:27:48,893 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 15:27:48,918 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 15:27:48,918 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 15:27:48,918 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-10 15:27:48,918 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 15:27:48,918 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 15:27:48,919 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 15:27:48,919 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 15:27:48,919 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 15:27:48,937 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-10 15:27:48,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-10 15:27:48,944 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:27:48,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:27:48,945 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:27:48,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:27:48,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-07-10 15:27:48,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:27:48,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028338033] [2020-07-10 15:27:48,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:27:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:27:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:27:49,090 INFO L280 TraceCheckUtils]: 0: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-10 15:27:49,090 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {22#true} {22#true} #38#return; {22#true} is VALID [2020-07-10 15:27:49,093 INFO L263 TraceCheckUtils]: 0: Hoare triple {22#true} call ULTIMATE.init(); {22#true} is VALID [2020-07-10 15:27:49,093 INFO L280 TraceCheckUtils]: 1: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-10 15:27:49,094 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {22#true} {22#true} #38#return; {22#true} is VALID [2020-07-10 15:27:49,094 INFO L263 TraceCheckUtils]: 3: Hoare triple {22#true} call #t~ret7 := main(); {22#true} is VALID [2020-07-10 15:27:49,095 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;assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;~z~0 := #t~nondet2;havoc #t~nondet2; {22#true} is VALID [2020-07-10 15:27:49,100 INFO L280 TraceCheckUtils]: 5: Hoare triple {22#true} assume !true; {23#false} is VALID [2020-07-10 15:27:49,101 INFO L263 TraceCheckUtils]: 6: Hoare triple {23#false} call __VERIFIER_assert(0); {23#false} is VALID [2020-07-10 15:27:49,101 INFO L280 TraceCheckUtils]: 7: Hoare triple {23#false} ~cond := #in~cond; {23#false} is VALID [2020-07-10 15:27:49,102 INFO L280 TraceCheckUtils]: 8: Hoare triple {23#false} assume 0 == ~cond; {23#false} is VALID [2020-07-10 15:27:49,102 INFO L280 TraceCheckUtils]: 9: Hoare triple {23#false} assume !false; {23#false} is VALID [2020-07-10 15:27:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:27:49,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028338033] [2020-07-10 15:27:49,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:27:49,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 15:27:49,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204791030] [2020-07-10 15:27:49,112 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-10 15:27:49,118 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:27:49,125 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 15:27:49,155 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:27:49,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 15:27:49,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:27:49,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 15:27:49,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 15:27:49,167 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-10 15:27:49,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:27:49,230 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-10 15:27:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 15:27:49,231 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-10 15:27:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:27:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 15:27:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2020-07-10 15:27:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 15:27:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2020-07-10 15:27:49,246 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 35 transitions. [2020-07-10 15:27:49,309 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:27:49,319 INFO L225 Difference]: With dead ends: 31 [2020-07-10 15:27:49,320 INFO L226 Difference]: Without dead ends: 12 [2020-07-10 15:27:49,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 15:27:49,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-10 15:27:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-10 15:27:49,363 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:27:49,364 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states. Second operand 12 states. [2020-07-10 15:27:49,364 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-10 15:27:49,364 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-10 15:27:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:27:49,367 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-07-10 15:27:49,368 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-07-10 15:27:49,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:27:49,369 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:27:49,369 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-10 15:27:49,369 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-10 15:27:49,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:27:49,372 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-07-10 15:27:49,372 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-07-10 15:27:49,373 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:27:49,373 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:27:49,374 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:27:49,374 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:27:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-10 15:27:49,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-07-10 15:27:49,378 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2020-07-10 15:27:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:27:49,378 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-07-10 15:27:49,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 15:27:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-07-10 15:27:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-10 15:27:49,379 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:27:49,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:27:49,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 15:27:49,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:27:49,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:27:49,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2020-07-10 15:27:49,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:27:49,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852811325] [2020-07-10 15:27:49,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:27:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 15:27:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 15:27:49,430 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-10 15:27:49,430 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 15:27:49,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 15:27:49,449 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 15:27:49,450 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 15:27:49,450 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 15:27:49,450 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 15:27:49,450 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-10 15:27:49,450 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 15:27:49,451 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 15:27:49,451 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 15:27:49,451 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-10 15:27:49,451 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-10 15:27:49,451 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-10 15:27:49,451 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 15:27:49,452 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 15:27:49,452 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 15:27:49,452 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-10 15:27:49,452 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-10 15:27:49,452 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-10 15:27:49,453 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-10 15:27:49,453 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-10 15:27:49,453 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-10 15:27:49,453 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-10 15:27:49,453 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-10 15:27:49,453 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:27:49,454 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 15:27:49,454 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 15:27:49,454 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. [2020-07-10 15:27:49,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 03:27:49 BoogieIcfgContainer [2020-07-10 15:27:49,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 15:27:49,460 INFO L168 Benchmark]: Toolchain (without parser) took 1292.13 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 103.6 MB in the beginning and 124.0 MB in the end (delta: -20.4 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:49,461 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory is still 121.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-10 15:27:49,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.70 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 93.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:49,463 INFO L168 Benchmark]: Boogie Preprocessor took 118.47 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.9 MB in the beginning and 181.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:49,464 INFO L168 Benchmark]: RCFGBuilder took 301.70 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 164.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:49,465 INFO L168 Benchmark]: TraceAbstraction took 604.67 ms. Allocated memory is still 202.9 MB. Free memory was 164.7 MB in the beginning and 124.0 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:49,468 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 0.21 ms. Allocated memory is still 138.9 MB. Free memory is still 121.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.70 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 93.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.47 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.9 MB in the beginning and 181.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 301.70 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 164.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 604.67 ms. Allocated memory is still 202.9 MB. Free memory was 164.7 MB in the beginning and 124.0 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 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: [L14] int x=__VERIFIER_nondet_int(); [L15] int y=__VERIFIER_nondet_int(); [L16] int z=__VERIFIER_nondet_int(); [L18] COND FALSE !(x<100 && 100