/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/even.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 17:40:55,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 17:40:55,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 17:40:55,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 17:40:55,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 17:40:55,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 17:40:55,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 17:40:55,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 17:40:55,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 17:40:55,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 17:40:55,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 17:40:55,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 17:40:55,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 17:40:55,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 17:40:55,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 17:40:55,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 17:40:55,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 17:40:55,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 17:40:55,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 17:40:55,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 17:40:55,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 17:40:55,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 17:40:55,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 17:40:55,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 17:40:55,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 17:40:55,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 17:40:55,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 17:40:55,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 17:40:55,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 17:40:55,714 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 17:40:55,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 17:40:55,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 17:40:55,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 17:40:55,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 17:40:55,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 17:40:55,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 17:40:55,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 17:40:55,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 17:40:55,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 17:40:55,718 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 17:40:55,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 17:40:55,718 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 17:40:55,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 17:40:55,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 17:40:55,719 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 17:40:55,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 17:40:55,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 17:40:55,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 17:40:55,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 17:40:55,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 17:40:55,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 17:40:55,720 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-08 17:40:56,001 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 17:40:56,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 17:40:56,018 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 17:40:56,020 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 17:40:56,020 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 17:40:56,021 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/even.c [2020-07-08 17:40:56,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7ec8b47/dfd8edf9aa4348b98b0e553ff2fa1db9/FLAG8797b0e53 [2020-07-08 17:40:56,637 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 17:40:56,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/even.c [2020-07-08 17:40:56,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7ec8b47/dfd8edf9aa4348b98b0e553ff2fa1db9/FLAG8797b0e53 [2020-07-08 17:40:57,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7ec8b47/dfd8edf9aa4348b98b0e553ff2fa1db9 [2020-07-08 17:40:57,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 17:40:57,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 17:40:57,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 17:40:57,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 17:40:57,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 17:40:57,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 05:40:57" (1/1) ... [2020-07-08 17:40:57,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f18f3d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:40:57, skipping insertion in model container [2020-07-08 17:40:57,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 05:40:57" (1/1) ... [2020-07-08 17:40:57,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 17:40:57,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 17:40:57,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 17:40:57,246 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 17:40:57,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 17:40:57,280 INFO L208 MainTranslator]: Completed translation [2020-07-08 17:40:57,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:40:57 WrapperNode [2020-07-08 17:40:57,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 17:40:57,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 17:40:57,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 17:40:57,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 17:40:57,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:40:57" (1/1) ... [2020-07-08 17:40:57,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:40:57" (1/1) ... [2020-07-08 17:40:57,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:40:57" (1/1) ... [2020-07-08 17:40:57,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:40:57" (1/1) ... [2020-07-08 17:40:57,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:40:57" (1/1) ... [2020-07-08 17:40:57,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:40:57" (1/1) ... [2020-07-08 17:40:57,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:40:57" (1/1) ... [2020-07-08 17:40:57,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 17:40:57,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 17:40:57,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 17:40:57,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 17:40:57,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:40:57" (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 [2020-07-08 17:40:57,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 17:40:57,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 17:40:57,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 17:40:57,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 17:40:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 17:40:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 17:40:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 17:40:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 17:40:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 17:40:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 17:40:57,729 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 17:40:57,729 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-08 17:40:57,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 05:40:57 BoogieIcfgContainer [2020-07-08 17:40:57,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 17:40:57,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 17:40:57,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 17:40:57,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 17:40:57,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 05:40:57" (1/3) ... [2020-07-08 17:40:57,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4709367c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 05:40:57, skipping insertion in model container [2020-07-08 17:40:57,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:40:57" (2/3) ... [2020-07-08 17:40:57,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4709367c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 05:40:57, skipping insertion in model container [2020-07-08 17:40:57,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 05:40:57" (3/3) ... [2020-07-08 17:40:57,746 INFO L109 eAbstractionObserver]: Analyzing ICFG even.c [2020-07-08 17:40:57,762 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 17:40:57,772 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 17:40:57,792 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 17:40:57,830 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 17:40:57,831 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 17:40:57,831 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-08 17:40:57,831 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 17:40:57,832 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 17:40:57,832 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 17:40:57,832 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 17:40:57,832 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 17:40:57,850 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-08 17:40:57,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-08 17:40:57,864 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:40:57,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:40:57,866 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:40:57,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:40:57,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1137787585, now seen corresponding path program 1 times [2020-07-08 17:40:57,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:40:57,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787002790] [2020-07-08 17:40:57,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:40:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:58,069 INFO L280 TraceCheckUtils]: 0: Hoare triple {25#true} assume true; {25#true} is VALID [2020-07-08 17:40:58,070 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {25#true} {25#true} #36#return; {25#true} is VALID [2020-07-08 17:40:58,072 INFO L263 TraceCheckUtils]: 0: Hoare triple {25#true} call ULTIMATE.init(); {25#true} is VALID [2020-07-08 17:40:58,073 INFO L280 TraceCheckUtils]: 1: Hoare triple {25#true} assume true; {25#true} is VALID [2020-07-08 17:40:58,074 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {25#true} {25#true} #36#return; {25#true} is VALID [2020-07-08 17:40:58,074 INFO L263 TraceCheckUtils]: 3: Hoare triple {25#true} call #t~ret1 := main(); {25#true} is VALID [2020-07-08 17:40:58,075 INFO L280 TraceCheckUtils]: 4: Hoare triple {25#true} ~x~0 := 0; {25#true} is VALID [2020-07-08 17:40:58,077 INFO L280 TraceCheckUtils]: 5: Hoare triple {25#true} assume !true; {26#false} is VALID [2020-07-08 17:40:58,077 INFO L263 TraceCheckUtils]: 6: Hoare triple {26#false} call __VERIFIER_assert((if 0 == (if ~x~0 % 4294967296 < 0 && 0 != ~x~0 % 4294967296 % 2 then ~x~0 % 4294967296 % 2 - 2 else ~x~0 % 4294967296 % 2) % 4294967296 then 1 else 0)); {26#false} is VALID [2020-07-08 17:40:58,078 INFO L280 TraceCheckUtils]: 7: Hoare triple {26#false} ~cond := #in~cond; {26#false} is VALID [2020-07-08 17:40:58,078 INFO L280 TraceCheckUtils]: 8: Hoare triple {26#false} assume 0 == ~cond; {26#false} is VALID [2020-07-08 17:40:58,079 INFO L280 TraceCheckUtils]: 9: Hoare triple {26#false} assume !false; {26#false} is VALID [2020-07-08 17:40:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:40:58,080 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:40:58,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787002790] [2020-07-08 17:40:58,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:40:58,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-08 17:40:58,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788632588] [2020-07-08 17:40:58,094 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-08 17:40:58,097 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:40:58,102 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-08 17:40:58,132 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:58,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-08 17:40:58,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:40:58,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-08 17:40:58,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-08 17:40:58,146 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-08 17:40:58,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:58,240 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-07-08 17:40:58,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-08 17:40:58,241 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-08 17:40:58,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:40:58,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-08 17:40:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 37 transitions. [2020-07-08 17:40:58,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-08 17:40:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 37 transitions. [2020-07-08 17:40:58,262 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 37 transitions. [2020-07-08 17:40:58,335 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:58,348 INFO L225 Difference]: With dead ends: 34 [2020-07-08 17:40:58,348 INFO L226 Difference]: Without dead ends: 15 [2020-07-08 17:40:58,352 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 [2020-07-08 17:40:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-08 17:40:58,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-08 17:40:58,402 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:40:58,403 INFO L82 GeneralOperation]: Start isEquivalent. First operand 15 states. Second operand 15 states. [2020-07-08 17:40:58,404 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand 15 states. [2020-07-08 17:40:58,404 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 15 states. [2020-07-08 17:40:58,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:58,408 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-07-08 17:40:58,409 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-08 17:40:58,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:58,409 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:58,410 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand 15 states. [2020-07-08 17:40:58,410 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 15 states. [2020-07-08 17:40:58,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:58,414 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-07-08 17:40:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-08 17:40:58,415 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:58,415 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:58,415 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:40:58,416 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:40:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-08 17:40:58,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-08 17:40:58,420 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2020-07-08 17:40:58,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:40:58,421 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-08 17:40:58,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-08 17:40:58,422 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 15 states and 15 transitions. [2020-07-08 17:40:58,453 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-08 17:40:58,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-08 17:40:58,454 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:40:58,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:40:58,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 17:40:58,456 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:40:58,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:40:58,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1424281528, now seen corresponding path program 1 times [2020-07-08 17:40:58,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:40:58,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97204554] [2020-07-08 17:40:58,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:40:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:58,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 17:40:58,582 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:799) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:883) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-08 17:40:58,595 INFO L168 Benchmark]: Toolchain (without parser) took 1570.23 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 100.9 MB in the beginning and 122.2 MB in the end (delta: -21.3 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-07-08 17:40:58,597 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 144.2 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-08 17:40:58,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.21 ms. Allocated memory is still 144.2 MB. Free memory was 100.7 MB in the beginning and 91.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-08 17:40:58,602 INFO L168 Benchmark]: Boogie Preprocessor took 35.95 ms. Allocated memory is still 144.2 MB. Free memory was 91.2 MB in the beginning and 89.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-08 17:40:58,604 INFO L168 Benchmark]: RCFGBuilder took 416.52 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 89.6 MB in the beginning and 167.7 MB in the end (delta: -78.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-08 17:40:58,605 INFO L168 Benchmark]: TraceAbstraction took 853.13 ms. Allocated memory is still 202.4 MB. Free memory was 167.7 MB in the beginning and 122.2 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. [2020-07-08 17:40:58,616 INFO L336 ainManager$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 0.28 ms. Allocated memory is still 144.2 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.21 ms. Allocated memory is still 144.2 MB. Free memory was 100.7 MB in the beginning and 91.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.95 ms. Allocated memory is still 144.2 MB. Free memory was 91.2 MB in the beginning and 89.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.52 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 89.6 MB in the beginning and 167.7 MB in the end (delta: -78.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 853.13 ms. Allocated memory is still 202.4 MB. Free memory was 167.7 MB in the beginning and 122.2 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 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...