/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_3-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 20:22:37,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 20:22:37,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 20:22:38,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 20:22:38,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 20:22:38,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 20:22:38,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 20:22:38,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 20:22:38,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 20:22:38,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 20:22:38,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 20:22:38,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 20:22:38,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 20:22:38,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 20:22:38,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 20:22:38,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 20:22:38,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 20:22:38,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 20:22:38,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 20:22:38,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 20:22:38,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 20:22:38,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 20:22:38,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 20:22:38,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 20:22:38,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 20:22:38,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 20:22:38,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 20:22:38,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 20:22:38,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-10 20:22:38,104 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 20:22:38,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 20:22:38,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 20:22:38,112 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 20:22:38,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 20:22:38,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 20:22:38,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 20:22:38,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 20:22:38,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 20:22:38,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 20:22:38,114 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 20:22:38,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 20:22:38,118 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 20:22:38,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 20:22:38,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 20:22:38,119 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 20:22:38,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 20:22:38,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 20:22:38,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 20:22:38,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 20:22:38,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 20:22:38,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 20:22:38,120 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 20:22:38,424 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 20:22:38,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 20:22:38,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 20:22:38,443 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 20:22:38,443 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 20:22:38,444 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-1.c [2020-07-10 20:22:38,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bca6d831c/a301481fcdbf4243a42ab31d7d54a231/FLAGfc52f33aa [2020-07-10 20:22:38,931 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 20:22:38,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-1.c [2020-07-10 20:22:38,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bca6d831c/a301481fcdbf4243a42ab31d7d54a231/FLAGfc52f33aa [2020-07-10 20:22:39,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bca6d831c/a301481fcdbf4243a42ab31d7d54a231 [2020-07-10 20:22:39,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 20:22:39,339 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 20:22:39,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 20:22:39,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 20:22:39,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 20:22:39,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:22:39" (1/1) ... [2020-07-10 20:22:39,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65bfd2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:39, skipping insertion in model container [2020-07-10 20:22:39,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:22:39" (1/1) ... [2020-07-10 20:22:39,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 20:22:39,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 20:22:39,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:22:39,570 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 20:22:39,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:22:39,613 INFO L208 MainTranslator]: Completed translation [2020-07-10 20:22:39,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:39 WrapperNode [2020-07-10 20:22:39,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 20:22:39,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 20:22:39,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 20:22:39,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 20:22:39,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:39" (1/1) ... [2020-07-10 20:22:39,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:39" (1/1) ... [2020-07-10 20:22:39,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:39" (1/1) ... [2020-07-10 20:22:39,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:39" (1/1) ... [2020-07-10 20:22:39,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:39" (1/1) ... [2020-07-10 20:22:39,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:39" (1/1) ... [2020-07-10 20:22:39,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:39" (1/1) ... [2020-07-10 20:22:39,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 20:22:39,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 20:22:39,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 20:22:39,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 20:22:39,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 20:22:39,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 20:22:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 20:22:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 20:22:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 20:22:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 20:22:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2020-07-10 20:22:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 20:22:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 20:22:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 20:22:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 20:22:40,077 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 20:22:40,077 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 20:22:40,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:22:40 BoogieIcfgContainer [2020-07-10 20:22:40,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 20:22:40,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 20:22:40,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 20:22:40,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 20:22:40,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 08:22:39" (1/3) ... [2020-07-10 20:22:40,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a3fde7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:22:40, skipping insertion in model container [2020-07-10 20:22:40,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:39" (2/3) ... [2020-07-10 20:22:40,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a3fde7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:22:40, skipping insertion in model container [2020-07-10 20:22:40,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:22:40" (3/3) ... [2020-07-10 20:22:40,091 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_3-1.c [2020-07-10 20:22:40,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 20:22:40,116 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 20:22:40,138 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 20:22:40,166 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 20:22:40,166 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 20:22:40,166 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 20:22:40,166 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 20:22:40,167 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 20:22:40,167 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 20:22:40,167 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 20:22:40,167 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 20:22:40,182 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-10 20:22:40,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-10 20:22:40,195 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:22:40,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:22:40,197 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:22:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:22:40,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1456818433, now seen corresponding path program 1 times [2020-07-10 20:22:40,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:22:40,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242672700] [2020-07-10 20:22:40,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:22:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:40,389 INFO L280 TraceCheckUtils]: 0: Hoare triple {23#true} assume true; {23#true} is VALID [2020-07-10 20:22:40,390 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {23#true} {23#true} #34#return; {23#true} is VALID [2020-07-10 20:22:40,392 INFO L263 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {23#true} is VALID [2020-07-10 20:22:40,393 INFO L280 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2020-07-10 20:22:40,393 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #34#return; {23#true} is VALID [2020-07-10 20:22:40,393 INFO L263 TraceCheckUtils]: 3: Hoare triple {23#true} call #t~ret1 := main(); {23#true} is VALID [2020-07-10 20:22:40,394 INFO L280 TraceCheckUtils]: 4: Hoare triple {23#true} ~x~0 := 0; {23#true} is VALID [2020-07-10 20:22:40,394 INFO L280 TraceCheckUtils]: 5: Hoare triple {23#true} ~N~0 := #t~nondet0; {23#true} is VALID [2020-07-10 20:22:40,395 INFO L280 TraceCheckUtils]: 6: Hoare triple {23#true} havoc #t~nondet0; {23#true} is VALID [2020-07-10 20:22:40,396 INFO L280 TraceCheckUtils]: 7: Hoare triple {23#true} assume !true; {24#false} is VALID [2020-07-10 20:22:40,397 INFO L263 TraceCheckUtils]: 8: Hoare triple {24#false} call __VERIFIER_assert((if (if ~x~0 % 4294967296 < 0 && 0 != ~x~0 % 4294967296 % 2 then ~x~0 % 4294967296 % 2 - 2 else ~x~0 % 4294967296 % 2) % 4294967296 % 4294967296 <= 2147483647 then (if ~x~0 % 4294967296 < 0 && 0 != ~x~0 % 4294967296 % 2 then ~x~0 % 4294967296 % 2 - 2 else ~x~0 % 4294967296 % 2) % 4294967296 % 4294967296 else (if ~x~0 % 4294967296 < 0 && 0 != ~x~0 % 4294967296 % 2 then ~x~0 % 4294967296 % 2 - 2 else ~x~0 % 4294967296 % 2) % 4294967296 % 4294967296 - 4294967296)); {24#false} is VALID [2020-07-10 20:22:40,397 INFO L280 TraceCheckUtils]: 9: Hoare triple {24#false} ~cond := #in~cond; {24#false} is VALID [2020-07-10 20:22:40,398 INFO L280 TraceCheckUtils]: 10: Hoare triple {24#false} assume 0 == ~cond; {24#false} is VALID [2020-07-10 20:22:40,398 INFO L280 TraceCheckUtils]: 11: Hoare triple {24#false} assume !false; {24#false} is VALID [2020-07-10 20:22:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 20:22:40,400 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:22:40,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242672700] [2020-07-10 20:22:40,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 20:22:40,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 20:22:40,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574122382] [2020-07-10 20:22:40,412 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-10 20:22:40,415 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 20:22:40,419 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 20:22:40,453 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:40,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 20:22:40,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 20:22:40,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 20:22:40,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 20:22:40,465 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-10 20:22:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:40,559 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-07-10 20:22:40,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 20:22:40,559 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-10 20:22:40,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 20:22:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:22:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 34 transitions. [2020-07-10 20:22:40,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:22:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 34 transitions. [2020-07-10 20:22:40,576 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 34 transitions. [2020-07-10 20:22:40,670 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:40,681 INFO L225 Difference]: With dead ends: 31 [2020-07-10 20:22:40,681 INFO L226 Difference]: Without dead ends: 14 [2020-07-10 20:22:40,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 20:22:40,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-10 20:22:40,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-10 20:22:40,731 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 20:22:40,732 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand 14 states. [2020-07-10 20:22:40,732 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-10 20:22:40,732 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-10 20:22:40,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:40,736 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-10 20:22:40,736 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-10 20:22:40,737 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:40,737 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:40,737 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-10 20:22:40,737 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-10 20:22:40,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:40,741 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-10 20:22:40,741 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-10 20:22:40,741 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:40,742 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:40,742 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 20:22:40,742 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 20:22:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-10 20:22:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-10 20:22:40,746 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-10 20:22:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 20:22:40,747 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-10 20:22:40,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 20:22:40,747 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 14 states and 14 transitions. [2020-07-10 20:22:40,773 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:40,774 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-10 20:22:40,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-10 20:22:40,774 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:22:40,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:22:40,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 20:22:40,775 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:22:40,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:22:40,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1452200828, now seen corresponding path program 1 times [2020-07-10 20:22:40,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:22:40,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359328457] [2020-07-10 20:22:40,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:22:40,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 20:22:40,832 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.theory.linar.TableauxRow.(TableauxRow.java:45) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.generateLinVar(LinArSolve.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.createEquality(LinArSolve.java:1974) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createLAEquality(EqualityProxy.java:83) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createAtom(EqualityProxy.java:165) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.getLiteral(EqualityProxy.java:186) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createCCEquality(EqualityProxy.java:109) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.cclosure.CClosure.createEquality(CClosure.java:1015) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.cclosure.CCTerm.mergeInternal(CCTerm.java:405) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.cclosure.CCTerm.merge(CCTerm.java:377) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.cclosure.CClosure.setLiteral(CClosure.java:855) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.setLiteral(DPLLEngine.java:460) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.propagateClauses(DPLLEngine.java:402) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.propagateInternal(DPLLEngine.java:243) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.solve(DPLLEngine.java:1148) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol$CheckType$1.check(SMTInterpol.java:117) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.checkSatAssuming(SMTInterpol.java:494) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.checkSat(SMTInterpol.java:446) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:300) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:214) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:96) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:100) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:146) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:102) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-10 20:22:40,839 INFO L168 Benchmark]: Toolchain (without parser) took 1500.04 ms. Allocated memory was 137.9 MB in the beginning and 204.5 MB in the end (delta: 66.6 MB). Free memory was 103.2 MB in the beginning and 124.5 MB in the end (delta: -21.4 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:40,840 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-10 20:22:40,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.57 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 93.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:40,842 INFO L168 Benchmark]: Boogie Preprocessor took 159.85 ms. Allocated memory was 137.9 MB in the beginning and 204.5 MB in the end (delta: 66.6 MB). Free memory was 93.4 MB in the beginning and 183.6 MB in the end (delta: -90.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:40,843 INFO L168 Benchmark]: RCFGBuilder took 307.01 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 169.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:40,844 INFO L168 Benchmark]: TraceAbstraction took 752.79 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 124.5 MB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:40,848 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.57 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 93.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.85 ms. Allocated memory was 137.9 MB in the beginning and 204.5 MB in the end (delta: 66.6 MB). Free memory was 93.4 MB in the beginning and 183.6 MB in the end (delta: -90.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 307.01 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 169.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 752.79 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 124.5 MB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 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.theory.linar.TableauxRow.(TableauxRow.java:45) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...