/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/phases_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:48:16,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:48:16,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:48:16,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:48:16,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:48:16,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:48:16,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:48:16,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:48:16,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:48:16,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:48:16,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:48:16,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:48:16,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:48:16,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:48:16,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:48:16,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:48:16,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:48:16,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:48:16,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:48:16,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:48:16,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:48:16,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:48:16,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:48:16,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:48:16,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:48:17,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:48:17,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:48:17,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:48:17,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:48:17,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:48:17,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:48:17,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:48:17,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:48:17,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:48:17,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:48:17,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:48:17,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:48:17,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:48:17,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:48:17,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:48:17,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:48:17,019 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:48:17,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:48:17,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:48:17,020 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:48:17,020 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:48:17,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:48:17,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:48:17,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:48:17,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:48:17,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:48:17,021 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:48:17,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:48:17,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:48:17,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:48:17,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:48:17,309 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:48:17,310 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-1.c [2020-07-18 00:48:17,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e7d664b/934789bc79d84d20bc48205a7cd0aa89/FLAG43b804cfa [2020-07-18 00:48:17,778 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:48:17,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-1.c [2020-07-18 00:48:17,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e7d664b/934789bc79d84d20bc48205a7cd0aa89/FLAG43b804cfa [2020-07-18 00:48:18,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e7d664b/934789bc79d84d20bc48205a7cd0aa89 [2020-07-18 00:48:18,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:48:18,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:48:18,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:48:18,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:48:18,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:48:18,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:18" (1/1) ... [2020-07-18 00:48:18,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@221ba80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18, skipping insertion in model container [2020-07-18 00:48:18,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:18" (1/1) ... [2020-07-18 00:48:18,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:48:18,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:48:18,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:48:18,431 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:48:18,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:48:18,465 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:48:18,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18 WrapperNode [2020-07-18 00:48:18,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:48:18,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:48:18,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:48:18,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:48:18,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ... [2020-07-18 00:48:18,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ... [2020-07-18 00:48:18,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ... [2020-07-18 00:48:18,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ... [2020-07-18 00:48:18,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ... [2020-07-18 00:48:18,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ... [2020-07-18 00:48:18,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ... [2020-07-18 00:48:18,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:48:18,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:48:18,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:48:18,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:48:18,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (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 [2020-07-18 00:48:18,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:48:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:48:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 00:48:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:48:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:48:18,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:48:18,647 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:48:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 00:48:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-18 00:48:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:48:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:48:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:48:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:48:18,984 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:48:18,984 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-18 00:48:18,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:48:18 BoogieIcfgContainer [2020-07-18 00:48:18,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:48:18,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:48:18,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:48:18,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:48:18,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:48:18" (1/3) ... [2020-07-18 00:48:18,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e1f589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:48:18, skipping insertion in model container [2020-07-18 00:48:18,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (2/3) ... [2020-07-18 00:48:18,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e1f589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:48:18, skipping insertion in model container [2020-07-18 00:48:18,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:48:18" (3/3) ... [2020-07-18 00:48:18,997 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_2-1.c [2020-07-18 00:48:19,008 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:48:19,016 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:48:19,030 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:48:19,060 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:48:19,060 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:48:19,060 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:48:19,060 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:48:19,060 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:48:19,060 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:48:19,061 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:48:19,061 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:48:19,074 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-18 00:48:19,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-18 00:48:19,084 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:48:19,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:48:19,086 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:48:19,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:48:19,093 INFO L82 PathProgramCache]: Analyzing trace with hash 31250732, now seen corresponding path program 1 times [2020-07-18 00:48:19,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:48:19,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875327844] [2020-07-18 00:48:19,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:48:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:19,245 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-18 00:48:19,245 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {29#true} {29#true} #57#return; {29#true} is VALID [2020-07-18 00:48:19,247 INFO L263 TraceCheckUtils]: 0: Hoare triple {29#true} call ULTIMATE.init(); {29#true} is VALID [2020-07-18 00:48:19,247 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-18 00:48:19,248 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {29#true} {29#true} #57#return; {29#true} is VALID [2020-07-18 00:48:19,248 INFO L263 TraceCheckUtils]: 3: Hoare triple {29#true} call #t~ret2 := main(); {29#true} is VALID [2020-07-18 00:48:19,248 INFO L280 TraceCheckUtils]: 4: Hoare triple {29#true} ~x~0 := 1; {29#true} is VALID [2020-07-18 00:48:19,249 INFO L280 TraceCheckUtils]: 5: Hoare triple {29#true} ~y~0 := #t~nondet0; {29#true} is VALID [2020-07-18 00:48:19,249 INFO L280 TraceCheckUtils]: 6: Hoare triple {29#true} havoc #t~nondet0; {29#true} is VALID [2020-07-18 00:48:19,250 INFO L280 TraceCheckUtils]: 7: Hoare triple {29#true} assume !!(~y~0 % 4294967296 > 0); {29#true} is VALID [2020-07-18 00:48:19,251 INFO L280 TraceCheckUtils]: 8: Hoare triple {29#true} assume !true; {30#false} is VALID [2020-07-18 00:48:19,251 INFO L263 TraceCheckUtils]: 9: Hoare triple {30#false} call __VERIFIER_assert((if ~x~0 % 4294967296 != ~y~0 % 4294967296 then 1 else 0)); {30#false} is VALID [2020-07-18 00:48:19,251 INFO L280 TraceCheckUtils]: 10: Hoare triple {30#false} ~cond := #in~cond; {30#false} is VALID [2020-07-18 00:48:19,252 INFO L280 TraceCheckUtils]: 11: Hoare triple {30#false} assume 0 == ~cond; {30#false} is VALID [2020-07-18 00:48:19,252 INFO L280 TraceCheckUtils]: 12: Hoare triple {30#false} assume !false; {30#false} is VALID [2020-07-18 00:48:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:48:19,257 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:48:19,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875327844] [2020-07-18 00:48:19,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:48:19,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-18 00:48:19,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6184475] [2020-07-18 00:48:19,268 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-18 00:48:19,271 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:48:19,275 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-18 00:48:19,312 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:19,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-18 00:48:19,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:48:19,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-18 00:48:19,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 00:48:19,323 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-07-18 00:48:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:19,447 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-18 00:48:19,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-18 00:48:19,447 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-18 00:48:19,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:48:19,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:48:19,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions. [2020-07-18 00:48:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:48:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions. [2020-07-18 00:48:19,470 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 42 transitions. [2020-07-18 00:48:19,571 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:19,583 INFO L225 Difference]: With dead ends: 37 [2020-07-18 00:48:19,584 INFO L226 Difference]: Without dead ends: 19 [2020-07-18 00:48:19,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 00:48:19,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-18 00:48:19,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-18 00:48:19,639 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:48:19,640 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2020-07-18 00:48:19,641 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-18 00:48:19,641 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-18 00:48:19,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:19,646 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-18 00:48:19,646 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-18 00:48:19,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:19,647 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:19,647 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-18 00:48:19,648 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-18 00:48:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:19,651 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-18 00:48:19,652 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-18 00:48:19,652 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:19,652 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:19,653 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:48:19,653 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:48:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-18 00:48:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-07-18 00:48:19,658 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2020-07-18 00:48:19,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:48:19,658 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-07-18 00:48:19,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-18 00:48:19,659 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 19 states and 20 transitions. [2020-07-18 00:48:19,693 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:19,694 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-18 00:48:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-18 00:48:19,694 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:48:19,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:48:19,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:48:19,695 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:48:19,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:48:19,696 INFO L82 PathProgramCache]: Analyzing trace with hash 18321438, now seen corresponding path program 1 times [2020-07-18 00:48:19,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:48:19,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685356385] [2020-07-18 00:48:19,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:48:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 00:48:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 00:48:19,768 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:48:19,768 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-18 00:48:19,769 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 00:48:19,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:48:19,783 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 00:48:19,784 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:48:19,784 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:48:19,784 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-18 00:48:19,784 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 00:48:19,784 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-18 00:48:19,784 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 00:48:19,784 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:48:19,785 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:48:19,785 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-18 00:48:19,785 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-18 00:48:19,785 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-18 00:48:19,785 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-18 00:48:19,785 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-18 00:48:19,786 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 00:48:19,786 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-18 00:48:19,786 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-18 00:48:19,786 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-18 00:48:19,786 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-18 00:48:19,786 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-18 00:48:19,787 WARN L170 areAnnotationChecker]: L9-2 has no Hoare annotation [2020-07-18 00:48:19,787 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-18 00:48:19,787 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-18 00:48:19,787 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 00:48:19,787 WARN L170 areAnnotationChecker]: L19-1 has no Hoare annotation [2020-07-18 00:48:19,787 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-18 00:48:19,787 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-18 00:48:19,788 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-18 00:48:19,788 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 00:48:19,788 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-18 00:48:19,788 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-18 00:48:19,788 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-18 00:48:19,788 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-18 00:48:19,788 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 00:48:19,789 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-18 00:48:19,789 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-18 00:48:19,789 WARN L170 areAnnotationChecker]: L25-1 has no Hoare annotation [2020-07-18 00:48:19,789 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-18 00:48:19,789 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. [2020-07-18 00:48:19,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 12:48:19 BoogieIcfgContainer [2020-07-18 00:48:19,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 00:48:19,796 INFO L168 Benchmark]: Toolchain (without parser) took 1571.52 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 100.0 MB in the beginning and 107.1 MB in the end (delta: -7.2 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:19,797 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 00:48:19,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.53 ms. Allocated memory is still 134.7 MB. Free memory was 99.5 MB in the beginning and 89.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:19,799 INFO L168 Benchmark]: Boogie Preprocessor took 111.93 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 89.8 MB in the beginning and 179.2 MB in the end (delta: -89.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:19,800 INFO L168 Benchmark]: RCFGBuilder took 407.51 ms. Allocated memory is still 199.2 MB. Free memory was 178.2 MB in the beginning and 160.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:19,801 INFO L168 Benchmark]: TraceAbstraction took 803.51 ms. Allocated memory is still 199.2 MB. Free memory was 159.6 MB in the beginning and 107.1 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:19,805 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 0.24 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 237.53 ms. Allocated memory is still 134.7 MB. Free memory was 99.5 MB in the beginning and 89.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.93 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 89.8 MB in the beginning and 179.2 MB in the end (delta: -89.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.51 ms. Allocated memory is still 199.2 MB. Free memory was 178.2 MB in the beginning and 160.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 803.51 ms. Allocated memory is still 199.2 MB. Free memory was 159.6 MB in the beginning and 107.1 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] unsigned int x = 1; [L17] unsigned int y = __VERIFIER_nondet_uint(); [L19] COND FALSE !(!(y > 0)) [L21] COND FALSE !(x < y) [L29] CALL __VERIFIER_assert(x != y) [L9] COND TRUE !(cond) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 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: 28 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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: No data available, 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...