/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/n.c11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 23:36:42,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 23:36:42,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 23:36:42,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 23:36:42,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 23:36:42,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 23:36:42,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 23:36:42,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 23:36:42,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 23:36:42,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 23:36:42,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 23:36:42,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 23:36:42,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 23:36:42,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 23:36:42,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 23:36:42,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 23:36:42,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 23:36:42,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 23:36:42,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 23:36:42,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 23:36:42,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 23:36:42,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 23:36:42,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 23:36:42,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 23:36:42,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 23:36:42,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 23:36:42,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 23:36:42,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 23:36:42,961 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 23:36:42,970 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 23:36:42,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 23:36:42,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 23:36:42,971 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 23:36:42,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 23:36:42,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 23:36:42,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 23:36:42,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 23:36:42,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 23:36:42,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 23:36:42,973 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 23:36:42,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 23:36:42,973 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 23:36:42,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 23:36:42,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 23:36:42,974 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 23:36:42,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 23:36:42,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 23:36:42,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 23:36:42,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 23:36:42,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 23:36:42,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 23:36:42,975 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-08 23:36:43,240 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 23:36:43,253 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 23:36:43,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 23:36:43,258 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 23:36:43,258 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 23:36:43,259 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c11.c [2020-07-08 23:36:43,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc99fe84b/0c18a8f419e24721b4fdae8e9eca3f7d/FLAGd9e636e5b [2020-07-08 23:36:43,798 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 23:36:43,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c11.c [2020-07-08 23:36:43,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc99fe84b/0c18a8f419e24721b4fdae8e9eca3f7d/FLAGd9e636e5b [2020-07-08 23:36:44,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc99fe84b/0c18a8f419e24721b4fdae8e9eca3f7d [2020-07-08 23:36:44,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 23:36:44,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 23:36:44,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 23:36:44,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 23:36:44,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 23:36:44,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:36:44" (1/1) ... [2020-07-08 23:36:44,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a608218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:44, skipping insertion in model container [2020-07-08 23:36:44,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:36:44" (1/1) ... [2020-07-08 23:36:44,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 23:36:44,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 23:36:44,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 23:36:44,471 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 23:36:44,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 23:36:44,501 INFO L208 MainTranslator]: Completed translation [2020-07-08 23:36:44,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:44 WrapperNode [2020-07-08 23:36:44,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 23:36:44,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 23:36:44,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 23:36:44,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 23:36:44,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:44" (1/1) ... [2020-07-08 23:36:44,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:44" (1/1) ... [2020-07-08 23:36:44,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:44" (1/1) ... [2020-07-08 23:36:44,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:44" (1/1) ... [2020-07-08 23:36:44,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:44" (1/1) ... [2020-07-08 23:36:44,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:44" (1/1) ... [2020-07-08 23:36:44,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:44" (1/1) ... [2020-07-08 23:36:44,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 23:36:44,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 23:36:44,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 23:36:44,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 23:36:44,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:44" (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 23:36:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 23:36:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 23:36:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 23:36:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 23:36:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 23:36:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 23:36:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-08 23:36:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 23:36:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 23:36:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 23:36:44,979 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 23:36:44,979 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-08 23:36:44,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:36:44 BoogieIcfgContainer [2020-07-08 23:36:44,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 23:36:44,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 23:36:44,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 23:36:44,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 23:36:44,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 11:36:44" (1/3) ... [2020-07-08 23:36:44,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5513102a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:36:44, skipping insertion in model container [2020-07-08 23:36:44,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:36:44" (2/3) ... [2020-07-08 23:36:44,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5513102a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:36:44, skipping insertion in model container [2020-07-08 23:36:44,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:36:44" (3/3) ... [2020-07-08 23:36:44,994 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c11.c [2020-07-08 23:36:45,004 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 23:36:45,011 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 23:36:45,024 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 23:36:45,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 23:36:45,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 23:36:45,045 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-08 23:36:45,045 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 23:36:45,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 23:36:45,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 23:36:45,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 23:36:45,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 23:36:45,059 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-08 23:36:45,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-08 23:36:45,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:36:45,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:36:45,069 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:36:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:36:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1430370880, now seen corresponding path program 1 times [2020-07-08 23:36:45,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:36:45,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538569209] [2020-07-08 23:36:45,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:36:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:36:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:36:45,199 INFO L280 TraceCheckUtils]: 0: Hoare triple {31#true} assume true; {31#true} is VALID [2020-07-08 23:36:45,200 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {31#true} {31#true} #47#return; {31#true} is VALID [2020-07-08 23:36:45,202 INFO L263 TraceCheckUtils]: 0: Hoare triple {31#true} call ULTIMATE.init(); {31#true} is VALID [2020-07-08 23:36:45,203 INFO L280 TraceCheckUtils]: 1: Hoare triple {31#true} assume true; {31#true} is VALID [2020-07-08 23:36:45,203 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {31#true} {31#true} #47#return; {31#true} is VALID [2020-07-08 23:36:45,203 INFO L263 TraceCheckUtils]: 3: Hoare triple {31#true} call #t~ret2 := main(); {31#true} is VALID [2020-07-08 23:36:45,204 INFO L280 TraceCheckUtils]: 4: Hoare triple {31#true} havoc ~a~0; {31#true} is VALID [2020-07-08 23:36:45,204 INFO L280 TraceCheckUtils]: 5: Hoare triple {31#true} ~len~0 := 0; {31#true} is VALID [2020-07-08 23:36:45,204 INFO L280 TraceCheckUtils]: 6: Hoare triple {31#true} havoc ~i~0; {31#true} is VALID [2020-07-08 23:36:45,206 INFO L280 TraceCheckUtils]: 7: Hoare triple {31#true} assume !true; {32#false} is VALID [2020-07-08 23:36:45,206 INFO L263 TraceCheckUtils]: 8: Hoare triple {32#false} call __VERIFIER_assert((if ~len~0 % 4294967296 >= 0 && ~len~0 % 4294967296 < 5 then 1 else 0)); {32#false} is VALID [2020-07-08 23:36:45,206 INFO L280 TraceCheckUtils]: 9: Hoare triple {32#false} ~cond := #in~cond; {32#false} is VALID [2020-07-08 23:36:45,207 INFO L280 TraceCheckUtils]: 10: Hoare triple {32#false} assume 0 == ~cond; {32#false} is VALID [2020-07-08 23:36:45,207 INFO L280 TraceCheckUtils]: 11: Hoare triple {32#false} assume !false; {32#false} is VALID [2020-07-08 23:36:45,208 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 23:36:45,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538569209] [2020-07-08 23:36:45,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:36:45,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-08 23:36:45,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107099577] [2020-07-08 23:36:45,218 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-08 23:36:45,221 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:36:45,224 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-08 23:36:45,272 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:36:45,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-08 23:36:45,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:36:45,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-08 23:36:45,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-08 23:36:45,284 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-07-08 23:36:45,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:36:45,381 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-07-08 23:36:45,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-08 23:36:45,381 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-08 23:36:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:36:45,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-08 23:36:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2020-07-08 23:36:45,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-08 23:36:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2020-07-08 23:36:45,397 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 44 transitions. [2020-07-08 23:36:45,482 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:36:45,493 INFO L225 Difference]: With dead ends: 40 [2020-07-08 23:36:45,493 INFO L226 Difference]: Without dead ends: 21 [2020-07-08 23:36:45,497 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 23:36:45,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-08 23:36:45,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-08 23:36:45,554 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:36:45,555 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand 21 states. [2020-07-08 23:36:45,556 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-08 23:36:45,556 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-08 23:36:45,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:36:45,560 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-07-08 23:36:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-08 23:36:45,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:36:45,561 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:36:45,562 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-08 23:36:45,562 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-08 23:36:45,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:36:45,566 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-07-08 23:36:45,566 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-08 23:36:45,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:36:45,567 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:36:45,567 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:36:45,567 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:36:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-08 23:36:45,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-07-08 23:36:45,572 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12 [2020-07-08 23:36:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:36:45,572 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-07-08 23:36:45,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-08 23:36:45,573 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 21 states and 22 transitions. [2020-07-08 23:36:45,604 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:36:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-08 23:36:45,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-08 23:36:45,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:36:45,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:36:45,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 23:36:45,606 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:36:45,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:36:45,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1911322683, now seen corresponding path program 1 times [2020-07-08 23:36:45,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:36:45,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506930421] [2020-07-08 23:36:45,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:36:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:36:45,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 23:36:45,654 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.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-08 23:36:45,660 INFO L168 Benchmark]: Toolchain (without parser) took 1445.11 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 103.2 MB in the beginning and 115.4 MB in the end (delta: -12.2 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-07-08 23:36:45,661 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-08 23:36:45,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.58 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 93.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-08 23:36:45,663 INFO L168 Benchmark]: Boogie Preprocessor took 120.75 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.2 MB in the beginning and 180.0 MB in the end (delta: -86.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-08 23:36:45,664 INFO L168 Benchmark]: RCFGBuilder took 363.06 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 164.4 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2020-07-08 23:36:45,665 INFO L168 Benchmark]: TraceAbstraction took 668.88 ms. Allocated memory is still 201.9 MB. Free memory was 163.8 MB in the beginning and 115.4 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-07-08 23:36:45,670 INFO L336 ainManager$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 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.58 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 93.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.75 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.2 MB in the beginning and 180.0 MB in the end (delta: -86.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 363.06 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 164.4 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 668.88 ms. Allocated memory is still 201.9 MB. Free memory was 163.8 MB in the beginning and 115.4 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...