/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/simple_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:48:17,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:48:17,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:48:17,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:48:17,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:48:17,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:48:17,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:48:17,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:48:17,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:48:17,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:48:17,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:48:17,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:48:17,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:48:17,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:48:17,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:48:17,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:48:17,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:48:17,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:48:17,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:48:17,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:48:17,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:48:17,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:48:17,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:48:17,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:48:17,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:48:17,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:48:17,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:48:17,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:48:17,674 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 00:48:17,690 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:48:17,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:48:17,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:48:17,692 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:48:17,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:48:17,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:48:17,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:48:17,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:48:17,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:48:17,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:48:17,694 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:48:17,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:48:17,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:48:17,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:48:17,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:48:17,696 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:48:17,696 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:48:17,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:48:17,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:48:17,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:48:17,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:48:17,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:48:17,697 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:48:17,969 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:48:17,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:48:17,986 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:48:17,988 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:48:17,988 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:48:17,989 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_2-2.c [2020-07-18 00:48:18,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af5ebb06/b0cf4d07dc214cbe853c095f506da54c/FLAGedc9b90cf [2020-07-18 00:48:18,503 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:48:18,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-2.c [2020-07-18 00:48:18,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af5ebb06/b0cf4d07dc214cbe853c095f506da54c/FLAGedc9b90cf [2020-07-18 00:48:18,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af5ebb06/b0cf4d07dc214cbe853c095f506da54c [2020-07-18 00:48:18,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:48:18,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:48:18,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:48:18,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:48:18,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:48:18,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:18" (1/1) ... [2020-07-18 00:48:18,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118c986e 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 00:48:18,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:18" (1/1) ... [2020-07-18 00:48:18,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:48:18,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:48:19,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:48:19,133 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:48:19,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:48:19,163 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:48:19,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:19 WrapperNode [2020-07-18 00:48:19,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:48:19,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:48:19,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:48:19,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:48:19,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:19" (1/1) ... [2020-07-18 00:48:19,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:19" (1/1) ... [2020-07-18 00:48:19,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:19" (1/1) ... [2020-07-18 00:48:19,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:19" (1/1) ... [2020-07-18 00:48:19,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:19" (1/1) ... [2020-07-18 00:48:19,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:19" (1/1) ... [2020-07-18 00:48:19,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:19" (1/1) ... [2020-07-18 00:48:19,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:48:19,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:48:19,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:48:19,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:48:19,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:19" (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 00:48:19,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:48:19,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:48:19,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:48:19,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:48:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:48:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-18 00:48:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:48:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:48:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:48:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:48:19,625 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:48:19,625 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-18 00:48:19,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:48:19 BoogieIcfgContainer [2020-07-18 00:48:19,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:48:19,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:48:19,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:48:19,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:48:19,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:48:18" (1/3) ... [2020-07-18 00:48:19,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e1cc66 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 00:48:19,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:19" (2/3) ... [2020-07-18 00:48:19,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e1cc66 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 00:48:19,649 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 00:48:19,658 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_2-2.c [2020-07-18 00:48:19,675 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:48:19,685 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:48:19,699 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:48:19,724 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:48:19,725 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:48:19,725 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:48:19,725 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:48:19,725 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:48:19,726 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:48:19,726 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:48:19,726 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:48:19,741 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-18 00:48:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-18 00:48:19,752 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:48:19,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:48:19,754 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:48:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:48:19,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1940560411, now seen corresponding path program 1 times [2020-07-18 00:48:19,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:48:19,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530784901] [2020-07-18 00:48:19,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:48:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:19,915 INFO L280 TraceCheckUtils]: 0: Hoare triple {24#true} assume true; {24#true} is VALID [2020-07-18 00:48:19,916 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {24#true} {24#true} #35#return; {24#true} is VALID [2020-07-18 00:48:19,918 INFO L263 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {24#true} is VALID [2020-07-18 00:48:19,919 INFO L280 TraceCheckUtils]: 1: Hoare triple {24#true} assume true; {24#true} is VALID [2020-07-18 00:48:19,919 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {24#true} {24#true} #35#return; {24#true} is VALID [2020-07-18 00:48:19,920 INFO L263 TraceCheckUtils]: 3: Hoare triple {24#true} call #t~ret2 := main(); {24#true} is VALID [2020-07-18 00:48:19,920 INFO L280 TraceCheckUtils]: 4: Hoare triple {24#true} ~x~0 := #t~nondet0; {24#true} is VALID [2020-07-18 00:48:19,920 INFO L280 TraceCheckUtils]: 5: Hoare triple {24#true} havoc #t~nondet0; {24#true} is VALID [2020-07-18 00:48:19,922 INFO L280 TraceCheckUtils]: 6: Hoare triple {24#true} assume !true; {25#false} is VALID [2020-07-18 00:48:19,922 INFO L263 TraceCheckUtils]: 7: Hoare triple {25#false} call __VERIFIER_assert((if ~x~0 % 4294967296 > 268435455 then 1 else 0)); {25#false} is VALID [2020-07-18 00:48:19,923 INFO L280 TraceCheckUtils]: 8: Hoare triple {25#false} ~cond := #in~cond; {25#false} is VALID [2020-07-18 00:48:19,923 INFO L280 TraceCheckUtils]: 9: Hoare triple {25#false} assume 0 == ~cond; {25#false} is VALID [2020-07-18 00:48:19,923 INFO L280 TraceCheckUtils]: 10: Hoare triple {25#false} assume !false; {25#false} is VALID [2020-07-18 00:48:19,925 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 00:48:19,927 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:48:19,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530784901] [2020-07-18 00:48:19,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:48:19,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-18 00:48:19,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788632588] [2020-07-18 00:48:19,938 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-18 00:48:19,941 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:48:19,945 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-18 00:48:19,974 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:19,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-18 00:48:19,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:48:19,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-18 00:48:19,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 00:48:19,988 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-07-18 00:48:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:20,089 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-07-18 00:48:20,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-18 00:48:20,089 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-18 00:48:20,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:48:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:48:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2020-07-18 00:48:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:48:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2020-07-18 00:48:20,106 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 35 transitions. [2020-07-18 00:48:20,173 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:20,184 INFO L225 Difference]: With dead ends: 32 [2020-07-18 00:48:20,184 INFO L226 Difference]: Without dead ends: 15 [2020-07-18 00:48:20,188 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 00:48:20,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-18 00:48:20,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-18 00:48:20,233 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:48:20,233 INFO L82 GeneralOperation]: Start isEquivalent. First operand 15 states. Second operand 15 states. [2020-07-18 00:48:20,234 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand 15 states. [2020-07-18 00:48:20,234 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 15 states. [2020-07-18 00:48:20,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:20,238 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-07-18 00:48:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-18 00:48:20,239 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:20,239 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:20,239 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand 15 states. [2020-07-18 00:48:20,239 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 15 states. [2020-07-18 00:48:20,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:20,243 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-07-18 00:48:20,243 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-18 00:48:20,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:20,244 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:20,244 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:48:20,244 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:48:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-18 00:48:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-18 00:48:20,249 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2020-07-18 00:48:20,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:48:20,249 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-18 00:48:20,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-18 00:48:20,250 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 15 states and 15 transitions. [2020-07-18 00:48:20,284 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-18 00:48:20,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-18 00:48:20,285 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:48:20,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:48:20,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:48:20,286 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:48:20,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:48:20,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1947025058, now seen corresponding path program 1 times [2020-07-18 00:48:20,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:48:20,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665684499] [2020-07-18 00:48:20,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:48:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 00:48:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 00:48:20,354 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:48:20,354 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-18 00:48:20,354 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 00:48:20,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:48:20,368 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 00:48:20,368 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:48:20,368 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:48:20,368 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 00:48:20,369 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-18 00:48:20,369 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 00:48:20,369 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:48:20,369 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:48:20,369 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-18 00:48:20,370 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-18 00:48:20,370 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-18 00:48:20,370 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 00:48:20,370 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-18 00:48:20,370 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-18 00:48:20,371 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-18 00:48:20,371 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-18 00:48:20,371 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-18 00:48:20,371 WARN L170 areAnnotationChecker]: L5-2 has no Hoare annotation [2020-07-18 00:48:20,371 WARN L170 areAnnotationChecker]: L14-3 has no Hoare annotation [2020-07-18 00:48:20,372 WARN L170 areAnnotationChecker]: L14-3 has no Hoare annotation [2020-07-18 00:48:20,372 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-18 00:48:20,372 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 00:48:20,372 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 00:48:20,372 WARN L170 areAnnotationChecker]: L15-1 has no Hoare annotation [2020-07-18 00:48:20,372 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 00:48:20,373 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-18 00:48:20,373 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 00:48:20,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 12:48:20 BoogieIcfgContainer [2020-07-18 00:48:20,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 00:48:20,383 INFO L168 Benchmark]: Toolchain (without parser) took 1458.63 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 102.0 MB in the beginning and 119.5 MB in the end (delta: -17.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:20,384 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 00:48:20,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.57 ms. Allocated memory is still 136.8 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:20,386 INFO L168 Benchmark]: Boogie Preprocessor took 117.04 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 92.2 MB in the beginning and 181.1 MB in the end (delta: -88.9 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:20,387 INFO L168 Benchmark]: RCFGBuilder took 351.01 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 166.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:20,388 INFO L168 Benchmark]: TraceAbstraction took 741.68 ms. Allocated memory is still 201.9 MB. Free memory was 165.9 MB in the beginning and 119.5 MB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:20,391 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 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.57 ms. Allocated memory is still 136.8 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.04 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 92.2 MB in the beginning and 181.1 MB in the end (delta: -88.9 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 351.01 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 166.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 741.68 ms. Allocated memory is still 201.9 MB. Free memory was 165.9 MB in the beginning and 119.5 MB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = __VERIFIER_nondet_uint(); [L14] COND FALSE !(x < 0x0fffffff) [L18] CALL __VERIFIER_assert(x > 0x0fffffff) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 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=21occurred 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...