/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 0.1.25-267fbe0 [2020-07-18 00:48:19,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:48:19,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:48:19,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:48:19,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:48:19,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:48:19,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:48:19,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:48:19,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:48:19,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:48:19,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:48:19,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:48:19,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:48:19,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:48:19,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:48:19,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:48:19,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:48:19,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:48:19,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:48:19,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:48:19,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:48:19,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:48:19,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:48:19,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:48:19,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:48:19,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:48:19,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:48:19,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:48:19,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:48:19,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:48:19,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:48:19,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:48:19,266 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:48:19,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:48:19,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:48:19,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:48:19,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:48:19,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:48:19,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:48:19,268 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:48:19,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:48:19,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:48:19,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:48:19,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:48:19,269 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:48:19,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:48:19,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:48:19,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:48:19,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:48:19,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:48:19,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:48:19,271 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:48:19,566 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:48:19,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:48:19,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:48:19,589 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:48:19,590 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:48:19,590 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-1.c [2020-07-18 00:48:19,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c146ad5be/8509f17b650c4603b3cf98519fc682b0/FLAGee3b3d4c8 [2020-07-18 00:48:20,121 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:48:20,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-1.c [2020-07-18 00:48:20,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c146ad5be/8509f17b650c4603b3cf98519fc682b0/FLAGee3b3d4c8 [2020-07-18 00:48:20,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c146ad5be/8509f17b650c4603b3cf98519fc682b0 [2020-07-18 00:48:20,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:48:20,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:48:20,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:48:20,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:48:20,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:48:20,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:20" (1/1) ... [2020-07-18 00:48:20,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d7ccd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:20, skipping insertion in model container [2020-07-18 00:48:20,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:20" (1/1) ... [2020-07-18 00:48:20,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:48:20,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:48:20,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:48:20,815 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:48:20,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:48:20,851 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:48:20,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:20 WrapperNode [2020-07-18 00:48:20,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:48:20,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:48:20,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:48:20,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:48:20,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:20" (1/1) ... [2020-07-18 00:48:20,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:20" (1/1) ... [2020-07-18 00:48:20,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:20" (1/1) ... [2020-07-18 00:48:20,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:20" (1/1) ... [2020-07-18 00:48:20,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:20" (1/1) ... [2020-07-18 00:48:20,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:20" (1/1) ... [2020-07-18 00:48:20,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:20" (1/1) ... [2020-07-18 00:48:21,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:48:21,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:48:21,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:48:21,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:48:21,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:48:21,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:48:21,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:48:21,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:48:21,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:48:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:48:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2020-07-18 00:48:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:48:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:48:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:48:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:48:21,327 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:48:21,328 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-18 00:48:21,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:48:21 BoogieIcfgContainer [2020-07-18 00:48:21,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:48:21,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:48:21,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:48:21,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:48:21,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:48:20" (1/3) ... [2020-07-18 00:48:21,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6b535b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:48:21, skipping insertion in model container [2020-07-18 00:48:21,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:20" (2/3) ... [2020-07-18 00:48:21,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6b535b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:48:21, skipping insertion in model container [2020-07-18 00:48:21,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:48:21" (3/3) ... [2020-07-18 00:48:21,340 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_3-1.c [2020-07-18 00:48:21,352 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:48:21,363 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:48:21,400 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:48:21,460 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:48:21,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:48:21,460 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:48:21,461 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:48:21,461 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:48:21,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:48:21,464 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:48:21,465 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:48:21,486 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-18 00:48:21,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-18 00:48:21,500 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:48:21,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:48:21,501 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:48:21,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:48:21,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1456818433, now seen corresponding path program 1 times [2020-07-18 00:48:21,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:48:21,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946427588] [2020-07-18 00:48:21,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:48:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:21,662 INFO L280 TraceCheckUtils]: 0: Hoare triple {23#true} assume true; {23#true} is VALID [2020-07-18 00:48:21,663 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {23#true} {23#true} #34#return; {23#true} is VALID [2020-07-18 00:48:21,665 INFO L263 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {23#true} is VALID [2020-07-18 00:48:21,666 INFO L280 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2020-07-18 00:48:21,667 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #34#return; {23#true} is VALID [2020-07-18 00:48:21,667 INFO L263 TraceCheckUtils]: 3: Hoare triple {23#true} call #t~ret1 := main(); {23#true} is VALID [2020-07-18 00:48:21,668 INFO L280 TraceCheckUtils]: 4: Hoare triple {23#true} ~x~0 := 0; {23#true} is VALID [2020-07-18 00:48:21,668 INFO L280 TraceCheckUtils]: 5: Hoare triple {23#true} ~N~0 := #t~nondet0; {23#true} is VALID [2020-07-18 00:48:21,669 INFO L280 TraceCheckUtils]: 6: Hoare triple {23#true} havoc #t~nondet0; {23#true} is VALID [2020-07-18 00:48:21,672 INFO L280 TraceCheckUtils]: 7: Hoare triple {23#true} assume !true; {24#false} is VALID [2020-07-18 00:48:21,672 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 [2020-07-18 00:48:21,673 INFO L280 TraceCheckUtils]: 9: Hoare triple {24#false} ~cond := #in~cond; {24#false} is VALID [2020-07-18 00:48:21,673 INFO L280 TraceCheckUtils]: 10: Hoare triple {24#false} assume 0 == ~cond; {24#false} is VALID [2020-07-18 00:48:21,673 INFO L280 TraceCheckUtils]: 11: Hoare triple {24#false} assume !false; {24#false} is VALID [2020-07-18 00:48:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:48:21,677 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:48:21,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946427588] [2020-07-18 00:48:21,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:48:21,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-18 00:48:21,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024373048] [2020-07-18 00:48:21,688 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-18 00:48:21,691 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:48:21,695 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-18 00:48:21,727 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:21,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-18 00:48:21,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:48:21,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-18 00:48:21,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 00:48:21,741 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-18 00:48:21,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:21,829 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-07-18 00:48:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-18 00:48:21,830 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-18 00:48:21,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:48:21,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:48:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 34 transitions. [2020-07-18 00:48:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:48:21,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 34 transitions. [2020-07-18 00:48:21,846 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 34 transitions. [2020-07-18 00:48:21,910 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:21,921 INFO L225 Difference]: With dead ends: 31 [2020-07-18 00:48:21,921 INFO L226 Difference]: Without dead ends: 14 [2020-07-18 00:48:21,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 00:48:21,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-18 00:48:21,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-18 00:48:21,969 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:48:21,969 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand 14 states. [2020-07-18 00:48:21,970 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-18 00:48:21,970 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-18 00:48:21,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:21,974 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-18 00:48:21,974 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-18 00:48:21,975 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:21,975 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:21,975 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-18 00:48:21,975 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-18 00:48:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:21,979 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-18 00:48:21,979 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-18 00:48:21,979 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:21,980 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:21,980 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:48:21,980 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:48:21,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-18 00:48:21,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-18 00:48:21,984 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-18 00:48:21,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:48:21,985 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-18 00:48:21,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-18 00:48:21,985 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 14 states and 14 transitions. [2020-07-18 00:48:22,017 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-18 00:48:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-18 00:48:22,018 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:48:22,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:48:22,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:48:22,019 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:48:22,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:48:22,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1452200828, now seen corresponding path program 1 times [2020-07-18 00:48:22,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:48:22,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799619075] [2020-07-18 00:48:22,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:48:22,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:48:22,086 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:458) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.propagateClauses(DPLLEngine.java:400) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.propagateInternal(DPLLEngine.java:241) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.solve(DPLLEngine.java:1146) 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:283) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) 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) [2020-07-18 00:48:22,093 INFO L168 Benchmark]: Toolchain (without parser) took 1563.49 ms. Allocated memory was 136.8 MB in the beginning and 203.9 MB in the end (delta: 67.1 MB). Free memory was 102.3 MB in the beginning and 123.9 MB in the end (delta: -21.5 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:22,094 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 00:48:22,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.77 ms. Allocated memory is still 136.8 MB. Free memory was 102.1 MB in the beginning and 92.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:22,096 INFO L168 Benchmark]: Boogie Preprocessor took 160.59 ms. Allocated memory was 136.8 MB in the beginning and 203.9 MB in the end (delta: 67.1 MB). Free memory was 92.2 MB in the beginning and 184.1 MB in the end (delta: -92.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:22,097 INFO L168 Benchmark]: RCFGBuilder took 318.57 ms. Allocated memory is still 203.9 MB. Free memory was 184.1 MB in the beginning and 168.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:22,098 INFO L168 Benchmark]: TraceAbstraction took 756.69 ms. Allocated memory is still 203.9 MB. Free memory was 168.4 MB in the beginning and 123.9 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:22,103 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.77 ms. Allocated memory is still 136.8 MB. Free memory was 102.1 MB in the beginning and 92.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 160.59 ms. Allocated memory was 136.8 MB in the beginning and 203.9 MB in the end (delta: 67.1 MB). Free memory was 92.2 MB in the beginning and 184.1 MB in the end (delta: -92.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 318.57 ms. Allocated memory is still 203.9 MB. Free memory was 184.1 MB in the beginning and 168.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 756.69 ms. Allocated memory is still 203.9 MB. Free memory was 168.4 MB in the beginning and 123.9 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 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.theory.linar.TableauxRow.(TableauxRow.java:45) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...