/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/loops-crafted-1/mono-crafted_12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 20:25:25,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 20:25:25,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 20:25:25,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 20:25:25,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 20:25:25,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 20:25:25,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 20:25:25,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 20:25:25,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 20:25:25,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 20:25:25,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 20:25:25,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 20:25:25,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 20:25:25,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 20:25:25,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 20:25:25,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 20:25:25,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 20:25:25,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 20:25:25,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 20:25:25,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 20:25:25,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 20:25:25,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 20:25:25,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 20:25:25,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 20:25:25,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 20:25:25,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 20:25:25,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 20:25:25,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 20:25:25,256 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 20:25:25,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 20:25:25,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 20:25:25,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 20:25:25,267 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 20:25:25,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 20:25:25,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 20:25:25,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 20:25:25,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 20:25:25,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 20:25:25,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 20:25:25,269 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 20:25:25,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 20:25:25,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 20:25:25,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 20:25:25,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 20:25:25,270 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 20:25:25,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 20:25:25,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 20:25:25,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 20:25:25,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 20:25:25,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 20:25:25,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 20:25:25,271 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 20:25:25,559 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 20:25:25,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 20:25:25,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 20:25:25,583 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 20:25:25,583 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 20:25:25,584 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c [2020-07-10 20:25:25,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f46bb9f7/41f70e0b599c416487e2bd4d8077dccf/FLAGef2698d06 [2020-07-10 20:25:26,138 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 20:25:26,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c [2020-07-10 20:25:26,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f46bb9f7/41f70e0b599c416487e2bd4d8077dccf/FLAGef2698d06 [2020-07-10 20:25:26,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f46bb9f7/41f70e0b599c416487e2bd4d8077dccf [2020-07-10 20:25:26,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 20:25:26,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 20:25:26,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 20:25:26,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 20:25:26,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 20:25:26,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:25:26" (1/1) ... [2020-07-10 20:25:26,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d11234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:26, skipping insertion in model container [2020-07-10 20:25:26,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:25:26" (1/1) ... [2020-07-10 20:25:26,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 20:25:26,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 20:25:26,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:25:26,770 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 20:25:26,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:25:26,803 INFO L208 MainTranslator]: Completed translation [2020-07-10 20:25:26,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:26 WrapperNode [2020-07-10 20:25:26,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 20:25:26,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 20:25:26,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 20:25:26,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 20:25:26,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:26" (1/1) ... [2020-07-10 20:25:26,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:26" (1/1) ... [2020-07-10 20:25:26,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:26" (1/1) ... [2020-07-10 20:25:26,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:26" (1/1) ... [2020-07-10 20:25:26,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:26" (1/1) ... [2020-07-10 20:25:26,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:26" (1/1) ... [2020-07-10 20:25:26,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:26" (1/1) ... [2020-07-10 20:25:26,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 20:25:26,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 20:25:26,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 20:25:26,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 20:25:26,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:26" (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 20:25:27,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 20:25:27,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 20:25:27,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 20:25:27,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 20:25:27,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 20:25:27,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 20:25:27,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 20:25:27,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 20:25:27,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 20:25:27,247 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 20:25:27,247 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 20:25:27,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:25:27 BoogieIcfgContainer [2020-07-10 20:25:27,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 20:25:27,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 20:25:27,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 20:25:27,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 20:25:27,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 08:25:26" (1/3) ... [2020-07-10 20:25:27,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0af282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:25:27, skipping insertion in model container [2020-07-10 20:25:27,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:26" (2/3) ... [2020-07-10 20:25:27,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0af282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:25:27, skipping insertion in model container [2020-07-10 20:25:27,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:25:27" (3/3) ... [2020-07-10 20:25:27,267 INFO L109 eAbstractionObserver]: Analyzing ICFG mono-crafted_12.c [2020-07-10 20:25:27,283 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 20:25:27,291 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 20:25:27,311 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 20:25:27,339 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 20:25:27,340 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 20:25:27,340 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 20:25:27,340 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 20:25:27,340 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 20:25:27,341 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 20:25:27,341 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 20:25:27,341 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 20:25:27,362 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-10 20:25:27,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-10 20:25:27,374 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:25:27,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:25:27,376 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:25:27,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:25:27,383 INFO L82 PathProgramCache]: Analyzing trace with hash -103545344, now seen corresponding path program 1 times [2020-07-10 20:25:27,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:25:27,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764368180] [2020-07-10 20:25:27,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:25:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:25:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:25:27,584 INFO L280 TraceCheckUtils]: 0: Hoare triple {28#true} assume true; {28#true} is VALID [2020-07-10 20:25:27,585 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {28#true} {28#true} #44#return; {28#true} is VALID [2020-07-10 20:25:27,587 INFO L263 TraceCheckUtils]: 0: Hoare triple {28#true} call ULTIMATE.init(); {28#true} is VALID [2020-07-10 20:25:27,590 INFO L280 TraceCheckUtils]: 1: Hoare triple {28#true} assume true; {28#true} is VALID [2020-07-10 20:25:27,590 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {28#true} {28#true} #44#return; {28#true} is VALID [2020-07-10 20:25:27,591 INFO L263 TraceCheckUtils]: 3: Hoare triple {28#true} call #t~ret1 := main(); {28#true} is VALID [2020-07-10 20:25:27,591 INFO L280 TraceCheckUtils]: 4: Hoare triple {28#true} ~x~0 := 0; {28#true} is VALID [2020-07-10 20:25:27,592 INFO L280 TraceCheckUtils]: 5: Hoare triple {28#true} ~y~0 := 10000000; {28#true} is VALID [2020-07-10 20:25:27,592 INFO L280 TraceCheckUtils]: 6: Hoare triple {28#true} ~z~0 := 0; {28#true} is VALID [2020-07-10 20:25:27,595 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#true} assume !true; {29#false} is VALID [2020-07-10 20:25:27,596 INFO L263 TraceCheckUtils]: 8: Hoare triple {29#false} call __VERIFIER_assert((if 0 == (if ~z~0 % 4294967296 < 0 && 0 != ~z~0 % 4294967296 % 2 then ~z~0 % 4294967296 % 2 - 2 else ~z~0 % 4294967296 % 2) % 4294967296 then 1 else 0)); {29#false} is VALID [2020-07-10 20:25:27,596 INFO L280 TraceCheckUtils]: 9: Hoare triple {29#false} ~cond := #in~cond; {29#false} is VALID [2020-07-10 20:25:27,597 INFO L280 TraceCheckUtils]: 10: Hoare triple {29#false} assume 0 == ~cond; {29#false} is VALID [2020-07-10 20:25:27,597 INFO L280 TraceCheckUtils]: 11: Hoare triple {29#false} assume !false; {29#false} is VALID [2020-07-10 20:25:27,599 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 20:25:27,600 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:25:27,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764368180] [2020-07-10 20:25:27,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 20:25:27,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 20:25:27,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612210132] [2020-07-10 20:25:27,620 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-10 20:25:27,629 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 20:25:27,632 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 20:25:27,666 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 20:25:27,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 20:25:27,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 20:25:27,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 20:25:27,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 20:25:27,679 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-07-10 20:25:27,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:25:27,808 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-07-10 20:25:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 20:25:27,809 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-10 20:25:27,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 20:25:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:25:27,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 41 transitions. [2020-07-10 20:25:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:25:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 41 transitions. [2020-07-10 20:25:27,830 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 41 transitions. [2020-07-10 20:25:27,911 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:25:27,921 INFO L225 Difference]: With dead ends: 37 [2020-07-10 20:25:27,921 INFO L226 Difference]: Without dead ends: 18 [2020-07-10 20:25:27,925 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 20:25:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-10 20:25:27,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-10 20:25:27,983 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 20:25:27,984 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand 18 states. [2020-07-10 20:25:27,985 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-10 20:25:27,985 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-10 20:25:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:25:27,989 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-07-10 20:25:27,989 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-10 20:25:27,990 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:25:27,990 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:25:27,991 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-10 20:25:27,991 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-10 20:25:27,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:25:27,998 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-07-10 20:25:27,998 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-10 20:25:27,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:25:27,999 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:25:27,999 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 20:25:27,999 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 20:25:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-10 20:25:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-10 20:25:28,004 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12 [2020-07-10 20:25:28,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 20:25:28,005 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-10 20:25:28,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 20:25:28,005 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 18 states and 19 transitions. [2020-07-10 20:25:28,037 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:25:28,037 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-10 20:25:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-10 20:25:28,038 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:25:28,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:25:28,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 20:25:28,039 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:25:28,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:25:28,040 INFO L82 PathProgramCache]: Analyzing trace with hash -116474638, now seen corresponding path program 1 times [2020-07-10 20:25:28,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:25:28,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803387084] [2020-07-10 20:25:28,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:25:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:25:28,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 20:25:28,107 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:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:391) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:385) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:146) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:102) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-10 20:25:28,114 INFO L168 Benchmark]: Toolchain (without parser) took 1578.98 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 103.2 MB in the beginning and 116.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:28,115 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-10 20:25:28,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.64 ms. Allocated memory is still 145.2 MB. Free memory was 103.0 MB in the beginning and 93.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:28,117 INFO L168 Benchmark]: Boogie Preprocessor took 124.07 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 93.4 MB in the beginning and 181.6 MB in the end (delta: -88.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:28,118 INFO L168 Benchmark]: RCFGBuilder took 325.15 ms. Allocated memory is still 201.9 MB. Free memory was 181.6 MB in the beginning and 165.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:28,119 INFO L168 Benchmark]: TraceAbstraction took 855.16 ms. Allocated memory is still 201.9 MB. Free memory was 165.0 MB in the beginning and 116.3 MB in the end (delta: 48.6 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:28,123 INFO L336 ainManager$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 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.64 ms. Allocated memory is still 145.2 MB. Free memory was 103.0 MB in the beginning and 93.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.07 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 93.4 MB in the beginning and 181.6 MB in the end (delta: -88.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 325.15 ms. Allocated memory is still 201.9 MB. Free memory was 181.6 MB in the beginning and 165.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 855.16 ms. Allocated memory is still 201.9 MB. Free memory was 165.0 MB in the beginning and 116.3 MB in the end (delta: 48.6 MB). Peak memory consumption was 48.6 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...