/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-invariants/eq2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 20:25:49,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 20:25:49,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 20:25:49,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 20:25:49,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 20:25:49,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 20:25:49,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 20:25:49,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 20:25:49,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 20:25:49,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 20:25:49,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 20:25:49,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 20:25:49,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 20:25:49,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 20:25:49,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 20:25:49,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 20:25:49,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 20:25:49,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 20:25:49,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 20:25:49,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 20:25:49,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 20:25:49,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 20:25:49,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 20:25:49,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 20:25:49,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-10 20:25:49,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-10 20:25:49,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-10 20:25:49,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-10 20:25:49,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-10 20:25:49,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-10 20:25:49,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-10 20:25:49,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-10 20:25:49,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-10 20:25:49,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-10 20:25:49,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-10 20:25:49,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-10 20:25:49,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-10 20:25:49,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-10 20:25:49,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 20:25:49,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 20:25:49,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 20:25:49,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-10 20:25:49,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 20:25:49,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 20:25:49,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 20:25:49,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 20:25:49,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 20:25:49,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 20:25:49,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 20:25:49,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 20:25:49,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 20:25:49,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 20:25:49,584 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 20:25:49,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 20:25:49,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 20:25:49,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 20:25:49,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 20:25:49,586 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 20:25:49,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 20:25:49,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 20:25:49,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 20:25:49,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 20:25:49,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 20:25:49,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 20:25:49,587 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 20:25:49,887 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 20:25:49,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 20:25:49,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 20:25:49,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 20:25:49,905 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 20:25:49,905 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq2.c [2020-07-10 20:25:49,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/683b56ba0/7635436e1ca346b7aec9080df6019bb0/FLAG0ae275adf [2020-07-10 20:25:50,449 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 20:25:50,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq2.c [2020-07-10 20:25:50,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/683b56ba0/7635436e1ca346b7aec9080df6019bb0/FLAG0ae275adf [2020-07-10 20:25:50,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/683b56ba0/7635436e1ca346b7aec9080df6019bb0 [2020-07-10 20:25:50,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 20:25:50,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 20:25:50,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 20:25:50,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 20:25:50,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 20:25:50,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:25:50" (1/1) ... [2020-07-10 20:25:50,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74099987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:50, skipping insertion in model container [2020-07-10 20:25:50,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:25:50" (1/1) ... [2020-07-10 20:25:50,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 20:25:50,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 20:25:51,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:25:51,067 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 20:25:51,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:25:51,101 INFO L208 MainTranslator]: Completed translation [2020-07-10 20:25:51,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:51 WrapperNode [2020-07-10 20:25:51,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 20:25:51,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 20:25:51,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 20:25:51,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 20:25:51,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:51" (1/1) ... [2020-07-10 20:25:51,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:51" (1/1) ... [2020-07-10 20:25:51,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:51" (1/1) ... [2020-07-10 20:25:51,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:51" (1/1) ... [2020-07-10 20:25:51,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:51" (1/1) ... [2020-07-10 20:25:51,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:51" (1/1) ... [2020-07-10 20:25:51,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:51" (1/1) ... [2020-07-10 20:25:51,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 20:25:51,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 20:25:51,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 20:25:51,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 20:25:51,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:51" (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 20:25:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 20:25:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 20:25:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 20:25:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 20:25:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 20:25:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-10 20:25:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 20:25:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 20:25:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 20:25:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 20:25:51,501 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 20:25:51,502 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 20:25:51,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:25:51 BoogieIcfgContainer [2020-07-10 20:25:51,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 20:25:51,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 20:25:51,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 20:25:51,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 20:25:51,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 08:25:50" (1/3) ... [2020-07-10 20:25:51,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55788194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:25:51, skipping insertion in model container [2020-07-10 20:25:51,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:51" (2/3) ... [2020-07-10 20:25:51,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55788194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:25:51, skipping insertion in model container [2020-07-10 20:25:51,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:25:51" (3/3) ... [2020-07-10 20:25:51,538 INFO L109 eAbstractionObserver]: Analyzing ICFG eq2.c [2020-07-10 20:25:51,549 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 20:25:51,557 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 20:25:51,581 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 20:25:51,603 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 20:25:51,603 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 20:25:51,603 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 20:25:51,603 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 20:25:51,603 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 20:25:51,604 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 20:25:51,604 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 20:25:51,604 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 20:25:51,619 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-10 20:25:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-10 20:25:51,629 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:25:51,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:25:51,630 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:25:51,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:25:51,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1881134399, now seen corresponding path program 1 times [2020-07-10 20:25:51,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:25:51,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963840492] [2020-07-10 20:25:51,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:25:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:25:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:25:51,790 INFO L280 TraceCheckUtils]: 0: Hoare triple {33#true} assume true; {33#true} is VALID [2020-07-10 20:25:51,791 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {33#true} {33#true} #44#return; {33#true} is VALID [2020-07-10 20:25:51,793 INFO L263 TraceCheckUtils]: 0: Hoare triple {33#true} call ULTIMATE.init(); {33#true} is VALID [2020-07-10 20:25:51,794 INFO L280 TraceCheckUtils]: 1: Hoare triple {33#true} assume true; {33#true} is VALID [2020-07-10 20:25:51,795 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {33#true} {33#true} #44#return; {33#true} is VALID [2020-07-10 20:25:51,795 INFO L263 TraceCheckUtils]: 3: Hoare triple {33#true} call #t~ret4 := main(); {33#true} is VALID [2020-07-10 20:25:51,796 INFO L280 TraceCheckUtils]: 4: Hoare triple {33#true} ~w~0 := #t~nondet0; {33#true} is VALID [2020-07-10 20:25:51,796 INFO L280 TraceCheckUtils]: 5: Hoare triple {33#true} havoc #t~nondet0; {33#true} is VALID [2020-07-10 20:25:51,797 INFO L280 TraceCheckUtils]: 6: Hoare triple {33#true} ~x~0 := ~w~0; {33#true} is VALID [2020-07-10 20:25:51,797 INFO L280 TraceCheckUtils]: 7: Hoare triple {33#true} ~y~0 := 1 + ~w~0; {33#true} is VALID [2020-07-10 20:25:51,797 INFO L280 TraceCheckUtils]: 8: Hoare triple {33#true} ~z~0 := 1 + ~x~0; {33#true} is VALID [2020-07-10 20:25:51,799 INFO L280 TraceCheckUtils]: 9: Hoare triple {33#true} assume !true; {34#false} is VALID [2020-07-10 20:25:51,800 INFO L263 TraceCheckUtils]: 10: Hoare triple {34#false} call __VERIFIER_assert((if ~y~0 % 4294967296 == ~z~0 % 4294967296 then 1 else 0)); {34#false} is VALID [2020-07-10 20:25:51,800 INFO L280 TraceCheckUtils]: 11: Hoare triple {34#false} ~cond := #in~cond; {34#false} is VALID [2020-07-10 20:25:51,801 INFO L280 TraceCheckUtils]: 12: Hoare triple {34#false} assume 0 == ~cond; {34#false} is VALID [2020-07-10 20:25:51,801 INFO L280 TraceCheckUtils]: 13: Hoare triple {34#false} assume !false; {34#false} is VALID [2020-07-10 20:25:51,802 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 20:25:51,803 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:25:51,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963840492] [2020-07-10 20:25:51,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 20:25:51,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 20:25:51,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219759478] [2020-07-10 20:25:51,812 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-10 20:25:51,815 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 20:25:51,818 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 20:25:51,878 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:25:51,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 20:25:51,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 20:25:51,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 20:25:51,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 20:25:51,891 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-07-10 20:25:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:25:52,017 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-07-10 20:25:52,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 20:25:52,018 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-10 20:25:52,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 20:25:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:25:52,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 45 transitions. [2020-07-10 20:25:52,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:25:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 45 transitions. [2020-07-10 20:25:52,035 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 45 transitions. [2020-07-10 20:25:52,153 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:25:52,165 INFO L225 Difference]: With dead ends: 42 [2020-07-10 20:25:52,165 INFO L226 Difference]: Without dead ends: 23 [2020-07-10 20:25:52,169 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 20:25:52,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-10 20:25:52,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-10 20:25:52,223 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 20:25:52,224 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand 23 states. [2020-07-10 20:25:52,225 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2020-07-10 20:25:52,225 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2020-07-10 20:25:52,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:25:52,230 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-07-10 20:25:52,230 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-10 20:25:52,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:25:52,231 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:25:52,231 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2020-07-10 20:25:52,232 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2020-07-10 20:25:52,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:25:52,236 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-07-10 20:25:52,236 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-10 20:25:52,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:25:52,237 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:25:52,237 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 20:25:52,237 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 20:25:52,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-10 20:25:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-10 20:25:52,242 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2020-07-10 20:25:52,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 20:25:52,243 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-10 20:25:52,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 20:25:52,244 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 23 states and 23 transitions. [2020-07-10 20:25:52,282 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:25:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-10 20:25:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-10 20:25:52,283 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:25:52,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:25:52,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 20:25:52,284 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:25:52,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:25:52,285 INFO L82 PathProgramCache]: Analyzing trace with hash 2108856515, now seen corresponding path program 1 times [2020-07-10 20:25:52,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:25:52,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734359317] [2020-07-10 20:25:52,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:25:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:25:52,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 20:25:52,347 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:391) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:385) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) 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:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-10 20:25:52,356 INFO L168 Benchmark]: Toolchain (without parser) took 1494.94 ms. Allocated memory was 135.3 MB in the beginning and 198.7 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 109.5 MB in the end (delta: -9.0 MB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:52,357 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-10 20:25:52,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.39 ms. Allocated memory is still 135.3 MB. Free memory was 100.2 MB in the beginning and 90.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:52,362 INFO L168 Benchmark]: Boogie Preprocessor took 113.75 ms. Allocated memory was 135.3 MB in the beginning and 198.7 MB in the end (delta: 63.4 MB). Free memory was 90.6 MB in the beginning and 177.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:52,363 INFO L168 Benchmark]: RCFGBuilder took 291.73 ms. Allocated memory is still 198.7 MB. Free memory was 177.8 MB in the beginning and 161.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:52,365 INFO L168 Benchmark]: TraceAbstraction took 830.15 ms. Allocated memory is still 198.7 MB. Free memory was 161.1 MB in the beginning and 109.5 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:52,372 INFO L336 ainManager$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 0.20 ms. Allocated memory is still 135.3 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 240.39 ms. Allocated memory is still 135.3 MB. Free memory was 100.2 MB in the beginning and 90.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.75 ms. Allocated memory was 135.3 MB in the beginning and 198.7 MB in the end (delta: 63.4 MB). Free memory was 90.6 MB in the beginning and 177.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 291.73 ms. Allocated memory is still 198.7 MB. Free memory was 177.8 MB in the beginning and 161.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 830.15 ms. Allocated memory is still 198.7 MB. Free memory was 161.1 MB in the beginning and 109.5 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 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...