/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invariants/eq2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 06:40:00,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 06:40:00,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 06:40:00,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 06:40:00,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 06:40:00,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 06:40:00,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 06:40:00,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 06:40:00,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 06:40:00,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 06:40:00,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 06:40:00,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 06:40:00,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 06:40:00,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 06:40:00,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 06:40:00,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 06:40:00,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 06:40:00,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 06:40:00,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 06:40:00,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 06:40:00,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 06:40:00,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 06:40:00,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 06:40:00,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 06:40:00,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-18 06:40:00,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-18 06:40:00,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-18 06:40:00,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-18 06:40:00,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-18 06:40:00,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-18 06:40:00,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 06:40:00,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 06:40:00,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 06:40:00,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 06:40:00,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 06:40:00,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 06:40:00,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 06:40:00,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 06:40:00,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 06:40:00,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 06:40:00,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 06:40:00,447 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 06:40:00,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 06:40:00,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 06:40:00,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 06:40:00,480 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 06:40:00,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 06:40:00,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 06:40:00,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 06:40:00,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 06:40:00,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 06:40:00,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 06:40:00,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 06:40:00,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 06:40:00,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 06:40:00,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 06:40:00,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 06:40:00,485 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 06:40:00,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 06:40:00,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 06:40:00,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 06:40:00,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 06:40:00,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 06:40:00,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 06:40:00,487 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-18 06:40:00,768 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 06:40:00,784 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 06:40:00,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 06:40:00,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 06:40:00,790 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 06:40:00,791 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq2.c [2020-07-18 06:40:00,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c8cf1e0/1fd85b2a214240828c76b1841d8923da/FLAGff7d6c672 [2020-07-18 06:40:01,422 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 06:40:01,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq2.c [2020-07-18 06:40:01,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c8cf1e0/1fd85b2a214240828c76b1841d8923da/FLAGff7d6c672 [2020-07-18 06:40:01,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c8cf1e0/1fd85b2a214240828c76b1841d8923da [2020-07-18 06:40:01,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 06:40:01,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 06:40:01,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 06:40:01,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 06:40:01,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 06:40:01,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:40:01" (1/1) ... [2020-07-18 06:40:01,777 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 06:40:01, skipping insertion in model container [2020-07-18 06:40:01,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:40:01" (1/1) ... [2020-07-18 06:40:01,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 06:40:01,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 06:40:01,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:40:01,979 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 06:40:01,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:40:02,013 INFO L208 MainTranslator]: Completed translation [2020-07-18 06:40:02,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:40:02 WrapperNode [2020-07-18 06:40:02,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 06:40:02,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 06:40:02,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 06:40:02,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 06:40:02,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:40:02" (1/1) ... [2020-07-18 06:40:02,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:40:02" (1/1) ... [2020-07-18 06:40:02,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:40:02" (1/1) ... [2020-07-18 06:40:02,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:40:02" (1/1) ... [2020-07-18 06:40:02,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:40:02" (1/1) ... [2020-07-18 06:40:02,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:40:02" (1/1) ... [2020-07-18 06:40:02,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:40:02" (1/1) ... [2020-07-18 06:40:02,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 06:40:02,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 06:40:02,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 06:40:02,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 06:40:02,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:40:02" (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 06:40:02,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 06:40:02,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 06:40:02,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 06:40:02,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 06:40:02,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 06:40:02,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-18 06:40:02,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 06:40:02,228 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 06:40:02,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 06:40:02,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 06:40:02,499 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 06:40:02,499 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-18 06:40:02,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:40:02 BoogieIcfgContainer [2020-07-18 06:40:02,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 06:40:02,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 06:40:02,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 06:40:02,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 06:40:02,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 06:40:01" (1/3) ... [2020-07-18 06:40:02,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6deb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:40:02, skipping insertion in model container [2020-07-18 06:40:02,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:40:02" (2/3) ... [2020-07-18 06:40:02,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6deb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:40:02, skipping insertion in model container [2020-07-18 06:40:02,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:40:02" (3/3) ... [2020-07-18 06:40:02,517 INFO L109 eAbstractionObserver]: Analyzing ICFG eq2.c [2020-07-18 06:40:02,530 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 06:40:02,538 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 06:40:02,557 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 06:40:02,605 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 06:40:02,605 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 06:40:02,605 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 06:40:02,606 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 06:40:02,606 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 06:40:02,606 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 06:40:02,606 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 06:40:02,607 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 06:40:02,645 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-18 06:40:02,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-18 06:40:02,663 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:40:02,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:40:02,665 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:40:02,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:40:02,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1881134399, now seen corresponding path program 1 times [2020-07-18 06:40:02,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:40:02,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869744793] [2020-07-18 06:40:02,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:40:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:40:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:40:02,822 INFO L280 TraceCheckUtils]: 0: Hoare triple {33#true} assume true; {33#true} is VALID [2020-07-18 06:40:02,823 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {33#true} {33#true} #44#return; {33#true} is VALID [2020-07-18 06:40:02,825 INFO L263 TraceCheckUtils]: 0: Hoare triple {33#true} call ULTIMATE.init(); {33#true} is VALID [2020-07-18 06:40:02,826 INFO L280 TraceCheckUtils]: 1: Hoare triple {33#true} assume true; {33#true} is VALID [2020-07-18 06:40:02,826 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {33#true} {33#true} #44#return; {33#true} is VALID [2020-07-18 06:40:02,826 INFO L263 TraceCheckUtils]: 3: Hoare triple {33#true} call #t~ret4 := main(); {33#true} is VALID [2020-07-18 06:40:02,827 INFO L280 TraceCheckUtils]: 4: Hoare triple {33#true} ~w~0 := #t~nondet0; {33#true} is VALID [2020-07-18 06:40:02,827 INFO L280 TraceCheckUtils]: 5: Hoare triple {33#true} havoc #t~nondet0; {33#true} is VALID [2020-07-18 06:40:02,829 INFO L280 TraceCheckUtils]: 6: Hoare triple {33#true} ~x~0 := ~w~0; {33#true} is VALID [2020-07-18 06:40:02,829 INFO L280 TraceCheckUtils]: 7: Hoare triple {33#true} ~y~0 := 1 + ~w~0; {33#true} is VALID [2020-07-18 06:40:02,830 INFO L280 TraceCheckUtils]: 8: Hoare triple {33#true} ~z~0 := 1 + ~x~0; {33#true} is VALID [2020-07-18 06:40:02,831 INFO L280 TraceCheckUtils]: 9: Hoare triple {33#true} assume !true; {34#false} is VALID [2020-07-18 06:40:02,832 INFO L263 TraceCheckUtils]: 10: Hoare triple {34#false} call __VERIFIER_assert((if ~y~0 % 4294967296 == ~z~0 % 4294967296 then 1 else 0)); {34#false} is VALID [2020-07-18 06:40:02,832 INFO L280 TraceCheckUtils]: 11: Hoare triple {34#false} ~cond := #in~cond; {34#false} is VALID [2020-07-18 06:40:02,832 INFO L280 TraceCheckUtils]: 12: Hoare triple {34#false} assume 0 == ~cond; {34#false} is VALID [2020-07-18 06:40:02,833 INFO L280 TraceCheckUtils]: 13: Hoare triple {34#false} assume !false; {34#false} is VALID [2020-07-18 06:40:02,834 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 06:40:02,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869744793] [2020-07-18 06:40:02,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 06:40:02,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-18 06:40:02,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146237375] [2020-07-18 06:40:02,846 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-18 06:40:02,850 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:40:02,854 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-18 06:40:02,929 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 06:40:02,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-18 06:40:02,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:40:02,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-18 06:40:02,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 06:40:02,945 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-07-18 06:40:03,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:40:03,089 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-07-18 06:40:03,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-18 06:40:03,089 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-18 06:40:03,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:40:03,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 06:40:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 45 transitions. [2020-07-18 06:40:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 06:40:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 45 transitions. [2020-07-18 06:40:03,121 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 45 transitions. [2020-07-18 06:40:03,234 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:40:03,257 INFO L225 Difference]: With dead ends: 42 [2020-07-18 06:40:03,257 INFO L226 Difference]: Without dead ends: 23 [2020-07-18 06:40:03,265 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 [2020-07-18 06:40:03,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-18 06:40:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-18 06:40:03,333 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:40:03,334 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand 23 states. [2020-07-18 06:40:03,335 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2020-07-18 06:40:03,335 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2020-07-18 06:40:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:40:03,339 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-07-18 06:40:03,340 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-18 06:40:03,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:40:03,340 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:40:03,341 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2020-07-18 06:40:03,341 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2020-07-18 06:40:03,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:40:03,345 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-07-18 06:40:03,345 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-18 06:40:03,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:40:03,346 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:40:03,347 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:40:03,347 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:40:03,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-18 06:40:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-18 06:40:03,352 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2020-07-18 06:40:03,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:40:03,352 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-18 06:40:03,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-18 06:40:03,353 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 23 states and 23 transitions. [2020-07-18 06:40:03,388 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:40:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-18 06:40:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-18 06:40:03,389 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:40:03,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:40:03,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 06:40:03,391 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:40:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:40:03,391 INFO L82 PathProgramCache]: Analyzing trace with hash 2108856515, now seen corresponding path program 1 times [2020-07-18 06:40:03,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:40:03,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37664478] [2020-07-18 06:40:03,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:40:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:40:03,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 06:40:03,460 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:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 06:40:03,466 INFO L168 Benchmark]: Toolchain (without parser) took 1700.71 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 103.3 MB in the beginning and 115.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2020-07-18 06:40:03,467 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 137.9 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-18 06:40:03,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.96 ms. Allocated memory is still 137.9 MB. Free memory was 103.1 MB in the beginning and 93.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-18 06:40:03,469 INFO L168 Benchmark]: Boogie Preprocessor took 36.13 ms. Allocated memory is still 137.9 MB. Free memory was 93.5 MB in the beginning and 92.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-18 06:40:03,470 INFO L168 Benchmark]: RCFGBuilder took 452.34 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 92.0 MB in the beginning and 166.9 MB in the end (delta: -74.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-18 06:40:03,471 INFO L168 Benchmark]: TraceAbstraction took 958.00 ms. Allocated memory is still 202.9 MB. Free memory was 166.3 MB in the beginning and 115.8 MB in the end (delta: 50.5 MB). Peak memory consumption was 50.5 MB. Max. memory is 7.1 GB. [2020-07-18 06:40:03,476 INFO L336 ainManager$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 0.31 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: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.96 ms. Allocated memory is still 137.9 MB. Free memory was 103.1 MB in the beginning and 93.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.13 ms. Allocated memory is still 137.9 MB. Free memory was 93.5 MB in the beginning and 92.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 452.34 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 92.0 MB in the beginning and 166.9 MB in the end (delta: -74.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 958.00 ms. Allocated memory is still 202.9 MB. Free memory was 166.3 MB in the beginning and 115.8 MB in the end (delta: 50.5 MB). Peak memory consumption was 50.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...