/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_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:48:17,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:48:17,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:48:17,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:48:17,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:48:17,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:48:17,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:48:17,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:48:17,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:48:17,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:48:17,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:48:17,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:48:17,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:48:17,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:48:17,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:48:17,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:48:17,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:48:17,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:48:17,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:48:17,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:48:17,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:48:17,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:48:17,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:48:17,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:48:17,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-18 00:48:17,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-18 00:48:17,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-18 00:48:17,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-18 00:48:17,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-18 00:48:17,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-18 00:48:17,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 00:48:17,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 00:48:17,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 00:48:17,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 00:48:17,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 00:48:17,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 00:48:17,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 00:48:17,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 00:48:17,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:48:17,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:48:17,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:48:17,226 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 00:48:17,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:48:17,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:48:17,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:48:17,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:48:17,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:48:17,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:48:17,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:48:17,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:48:17,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:48:17,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:48:17,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:48:17,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:48:17,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:48:17,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:48:17,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:48:17,241 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:48:17,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:48:17,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:48:17,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:48:17,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:48:17,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:48:17,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:48:17,242 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:48:17,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:48:17,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:48:17,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:48:17,543 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:48:17,544 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:48:17,545 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-07-18 00:48:17,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd202a4c/080227f2161347eaa5950cd42a19793a/FLAG3dfd6cd23 [2020-07-18 00:48:18,083 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:48:18,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-07-18 00:48:18,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd202a4c/080227f2161347eaa5950cd42a19793a/FLAG3dfd6cd23 [2020-07-18 00:48:18,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd202a4c/080227f2161347eaa5950cd42a19793a [2020-07-18 00:48:18,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:48:18,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:48:18,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:48:18,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:48:18,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:48:18,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:18" (1/1) ... [2020-07-18 00:48:18,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50db57eb 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 00:48:18,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:18" (1/1) ... [2020-07-18 00:48:18,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:48:18,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:48:18,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:48:18,735 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:48:18,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:48:18,768 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:48:18,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18 WrapperNode [2020-07-18 00:48:18,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:48:18,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:48:18,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:48:18,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:48:18,784 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 00:48:18,785 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 00:48:18,874 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 00:48:18,875 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 00:48:18,882 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 00:48:18,888 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 00:48:18,889 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 00:48:18,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:48:18,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:48:18,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:48:18,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:48:18,893 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 00:48:18,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:48:18,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:48:18,956 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 00:48:18,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:48:18,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:48:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:48:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:48:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 00:48:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-18 00:48:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:48:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:48:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:48:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:48:19,239 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:48:19,240 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-18 00:48:19,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:48:19 BoogieIcfgContainer [2020-07-18 00:48:19,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:48:19,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:48:19,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:48:19,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:48:19,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:48:18" (1/3) ... [2020-07-18 00:48:19,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504a1409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:48:19, skipping insertion in model container [2020-07-18 00:48:19,252 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 00:48:19,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504a1409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:48:19, skipping insertion in model container [2020-07-18 00:48:19,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:48:19" (3/3) ... [2020-07-18 00:48:19,256 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_2-2.c [2020-07-18 00:48:19,268 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:48:19,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:48:19,292 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:48:19,315 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:48:19,315 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:48:19,316 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:48:19,316 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:48:19,316 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:48:19,316 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:48:19,316 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:48:19,316 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:48:19,333 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-18 00:48:19,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-18 00:48:19,344 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:48:19,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:48:19,345 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:48:19,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:48:19,353 INFO L82 PathProgramCache]: Analyzing trace with hash 31250732, now seen corresponding path program 1 times [2020-07-18 00:48:19,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:48:19,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696123267] [2020-07-18 00:48:19,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:48:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:19,512 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-18 00:48:19,512 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {29#true} {29#true} #57#return; {29#true} is VALID [2020-07-18 00:48:19,514 INFO L263 TraceCheckUtils]: 0: Hoare triple {29#true} call ULTIMATE.init(); {29#true} is VALID [2020-07-18 00:48:19,515 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-18 00:48:19,516 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {29#true} {29#true} #57#return; {29#true} is VALID [2020-07-18 00:48:19,516 INFO L263 TraceCheckUtils]: 3: Hoare triple {29#true} call #t~ret2 := main(); {29#true} is VALID [2020-07-18 00:48:19,516 INFO L280 TraceCheckUtils]: 4: Hoare triple {29#true} ~x~0 := 1; {29#true} is VALID [2020-07-18 00:48:19,517 INFO L280 TraceCheckUtils]: 5: Hoare triple {29#true} ~y~0 := #t~nondet0; {29#true} is VALID [2020-07-18 00:48:19,517 INFO L280 TraceCheckUtils]: 6: Hoare triple {29#true} havoc #t~nondet0; {29#true} is VALID [2020-07-18 00:48:19,518 INFO L280 TraceCheckUtils]: 7: Hoare triple {29#true} assume !!(~y~0 % 4294967296 > 0); {29#true} is VALID [2020-07-18 00:48:19,519 INFO L280 TraceCheckUtils]: 8: Hoare triple {29#true} assume !true; {30#false} is VALID [2020-07-18 00:48:19,519 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 00:48:19,520 INFO L280 TraceCheckUtils]: 10: Hoare triple {30#false} ~cond := #in~cond; {30#false} is VALID [2020-07-18 00:48:19,520 INFO L280 TraceCheckUtils]: 11: Hoare triple {30#false} assume 0 == ~cond; {30#false} is VALID [2020-07-18 00:48:19,520 INFO L280 TraceCheckUtils]: 12: Hoare triple {30#false} assume !false; {30#false} is VALID [2020-07-18 00:48:19,522 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 00:48:19,524 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:48:19,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696123267] [2020-07-18 00:48:19,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:48:19,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-18 00:48:19,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653921217] [2020-07-18 00:48:19,536 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-18 00:48:19,545 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:48:19,549 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-18 00:48:19,630 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 00:48:19,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-18 00:48:19,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:48:19,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-18 00:48:19,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 00:48:19,640 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-07-18 00:48:19,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:19,753 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-18 00:48:19,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-18 00:48:19,754 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-18 00:48:19,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:48:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:48:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions. [2020-07-18 00:48:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:48:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions. [2020-07-18 00:48:19,771 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 42 transitions. [2020-07-18 00:48:19,841 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 00:48:19,853 INFO L225 Difference]: With dead ends: 37 [2020-07-18 00:48:19,853 INFO L226 Difference]: Without dead ends: 19 [2020-07-18 00:48:19,857 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 00:48:19,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-18 00:48:19,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-18 00:48:19,907 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:48:19,908 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2020-07-18 00:48:19,909 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-18 00:48:19,909 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-18 00:48:19,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:19,913 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-18 00:48:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-18 00:48:19,914 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:19,914 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:19,914 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-18 00:48:19,915 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-18 00:48:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:19,918 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-18 00:48:19,918 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-18 00:48:19,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:19,919 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:19,920 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:48:19,920 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:48:19,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-18 00:48:19,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-07-18 00:48:19,924 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2020-07-18 00:48:19,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:48:19,925 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-07-18 00:48:19,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-18 00:48:19,925 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 19 states and 20 transitions. [2020-07-18 00:48:19,956 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 00:48:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-18 00:48:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-18 00:48:19,957 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:48:19,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:48:19,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:48:19,958 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:48:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:48:19,958 INFO L82 PathProgramCache]: Analyzing trace with hash 18321438, now seen corresponding path program 1 times [2020-07-18 00:48:19,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:48:19,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142711271] [2020-07-18 00:48:19,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:48:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:20,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:48:20,051 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:146) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:102) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:283) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 00:48:20,057 INFO L168 Benchmark]: Toolchain (without parser) took 1557.38 ms. Allocated memory was 141.6 MB in the beginning and 199.8 MB in the end (delta: 58.2 MB). Free memory was 100.6 MB in the beginning and 110.1 MB in the end (delta: -9.5 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:20,058 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 141.6 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 00:48:20,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.61 ms. Allocated memory is still 141.6 MB. Free memory was 100.4 MB in the beginning and 90.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:20,060 INFO L168 Benchmark]: Boogie Preprocessor took 121.16 ms. Allocated memory was 141.6 MB in the beginning and 199.8 MB in the end (delta: 58.2 MB). Free memory was 90.6 MB in the beginning and 178.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:20,061 INFO L168 Benchmark]: RCFGBuilder took 354.32 ms. Allocated memory is still 199.8 MB. Free memory was 177.4 MB in the beginning and 160.2 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:20,062 INFO L168 Benchmark]: TraceAbstraction took 807.02 ms. Allocated memory is still 199.8 MB. Free memory was 159.5 MB in the beginning and 110.1 MB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:20,066 INFO L336 ainManager$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 0.83 ms. Allocated memory is still 141.6 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.61 ms. Allocated memory is still 141.6 MB. Free memory was 100.4 MB in the beginning and 90.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.16 ms. Allocated memory was 141.6 MB in the beginning and 199.8 MB in the end (delta: 58.2 MB). Free memory was 90.6 MB in the beginning and 178.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 354.32 ms. Allocated memory is still 199.8 MB. Free memory was 177.4 MB in the beginning and 160.2 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 807.02 ms. Allocated memory is still 199.8 MB. Free memory was 159.5 MB in the beginning and 110.1 MB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...