/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-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-11 02:32:10,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-11 02:32:10,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-11 02:32:10,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-11 02:32:10,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-11 02:32:10,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-11 02:32:10,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-11 02:32:10,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-11 02:32:10,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-11 02:32:10,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-11 02:32:10,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-11 02:32:10,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-11 02:32:10,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-11 02:32:10,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-11 02:32:10,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-11 02:32:10,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-11 02:32:10,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-11 02:32:10,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-11 02:32:10,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-11 02:32:10,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-11 02:32:10,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-11 02:32:10,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-11 02:32:10,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-11 02:32:10,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-11 02:32:10,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-11 02:32:10,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-11 02:32:10,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-11 02:32:10,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-11 02:32:10,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-11 02:32:10,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-11 02:32:10,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-11 02:32:10,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-11 02:32:10,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-11 02:32:10,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-11 02:32:10,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-11 02:32:10,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-11 02:32:10,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-11 02:32:10,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-11 02:32:10,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-11 02:32:10,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-11 02:32:10,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-11 02:32:10,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-11 02:32:10,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-11 02:32:10,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-11 02:32:10,917 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-11 02:32:10,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-11 02:32:10,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-11 02:32:10,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 02:32:10,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-11 02:32:10,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-11 02:32:10,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-11 02:32:10,918 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 [2020-07-11 02:32:11,212 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-11 02:32:11,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-11 02:32:11,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-11 02:32:11,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-11 02:32:11,236 INFO L275 PluginConnector]: CDTParser initialized [2020-07-11 02:32:11,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-07-11 02:32:11,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f525a92/debcc6722d224d5ea8454c6123c240ad/FLAG36e70ac29 [2020-07-11 02:32:11,854 INFO L306 CDTParser]: Found 1 translation units. [2020-07-11 02:32:11,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-07-11 02:32:11,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f525a92/debcc6722d224d5ea8454c6123c240ad/FLAG36e70ac29 [2020-07-11 02:32:12,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f525a92/debcc6722d224d5ea8454c6123c240ad [2020-07-11 02:32:12,247 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-11 02:32:12,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-11 02:32:12,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-11 02:32:12,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-11 02:32:12,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-11 02:32:12,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 02:32:12" (1/1) ... [2020-07-11 02:32:12,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d57911f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:32:12, skipping insertion in model container [2020-07-11 02:32:12,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 02:32:12" (1/1) ... [2020-07-11 02:32:12,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-11 02:32:12,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-11 02:32:12,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 02:32:12,481 INFO L203 MainTranslator]: Completed pre-run [2020-07-11 02:32:12,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 02:32:12,520 INFO L208 MainTranslator]: Completed translation [2020-07-11 02:32:12,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:32:12 WrapperNode [2020-07-11 02:32:12,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-11 02:32:12,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-11 02:32:12,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-11 02:32:12,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-11 02:32:12,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:32:12" (1/1) ... [2020-07-11 02:32:12,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:32:12" (1/1) ... [2020-07-11 02:32:12,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:32:12" (1/1) ... [2020-07-11 02:32:12,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:32:12" (1/1) ... [2020-07-11 02:32:12,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:32:12" (1/1) ... [2020-07-11 02:32:12,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:32:12" (1/1) ... [2020-07-11 02:32:12,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:32:12" (1/1) ... [2020-07-11 02:32:12,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-11 02:32:12,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-11 02:32:12,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-11 02:32:12,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-11 02:32:12,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:32:12" (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 [2020-07-11 02:32:12,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-11 02:32:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-11 02:32:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-11 02:32:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-11 02:32:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-11 02:32:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-11 02:32:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-11 02:32:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-11 02:32:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-11 02:32:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-11 02:32:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-11 02:32:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-11 02:32:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-11 02:32:13,041 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-11 02:32:13,042 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-11 02:32:13,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 02:32:13 BoogieIcfgContainer [2020-07-11 02:32:13,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-11 02:32:13,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-11 02:32:13,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-11 02:32:13,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-11 02:32:13,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 02:32:12" (1/3) ... [2020-07-11 02:32:13,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5735c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 02:32:13, skipping insertion in model container [2020-07-11 02:32:13,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:32:12" (2/3) ... [2020-07-11 02:32:13,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5735c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 02:32:13, skipping insertion in model container [2020-07-11 02:32:13,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 02:32:13" (3/3) ... [2020-07-11 02:32:13,061 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2020-07-11 02:32:13,077 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-11 02:32:13,088 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-11 02:32:13,105 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-11 02:32:13,134 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-11 02:32:13,135 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-11 02:32:13,135 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-11 02:32:13,135 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-11 02:32:13,136 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-11 02:32:13,136 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-11 02:32:13,136 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-11 02:32:13,136 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-11 02:32:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-11 02:32:13,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-11 02:32:13,168 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 02:32:13,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 02:32:13,171 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 02:32:13,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 02:32:13,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1686675663, now seen corresponding path program 1 times [2020-07-11 02:32:13,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 02:32:13,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323959501] [2020-07-11 02:32:13,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 02:32:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:32:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:32:13,338 INFO L280 TraceCheckUtils]: 0: Hoare triple {47#true} assume true; {47#true} is VALID [2020-07-11 02:32:13,339 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {47#true} {47#true} #81#return; {47#true} is VALID [2020-07-11 02:32:13,341 INFO L263 TraceCheckUtils]: 0: Hoare triple {47#true} call ULTIMATE.init(); {47#true} is VALID [2020-07-11 02:32:13,341 INFO L280 TraceCheckUtils]: 1: Hoare triple {47#true} assume true; {47#true} is VALID [2020-07-11 02:32:13,342 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {47#true} {47#true} #81#return; {47#true} is VALID [2020-07-11 02:32:13,342 INFO L263 TraceCheckUtils]: 3: Hoare triple {47#true} call #t~ret4 := main(); {47#true} is VALID [2020-07-11 02:32:13,343 INFO L280 TraceCheckUtils]: 4: Hoare triple {47#true} havoc ~i~0; {47#true} is VALID [2020-07-11 02:32:13,343 INFO L280 TraceCheckUtils]: 5: Hoare triple {47#true} havoc ~j~0; {47#true} is VALID [2020-07-11 02:32:13,343 INFO L280 TraceCheckUtils]: 6: Hoare triple {47#true} havoc ~a~0; {47#true} is VALID [2020-07-11 02:32:13,344 INFO L280 TraceCheckUtils]: 7: Hoare triple {47#true} havoc ~b~0; {47#true} is VALID [2020-07-11 02:32:13,344 INFO L280 TraceCheckUtils]: 8: Hoare triple {47#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {47#true} is VALID [2020-07-11 02:32:13,345 INFO L280 TraceCheckUtils]: 9: Hoare triple {47#true} ~flag~0 := #t~nondet0; {47#true} is VALID [2020-07-11 02:32:13,345 INFO L280 TraceCheckUtils]: 10: Hoare triple {47#true} havoc #t~nondet0; {47#true} is VALID [2020-07-11 02:32:13,345 INFO L280 TraceCheckUtils]: 11: Hoare triple {47#true} ~a~0 := 0; {47#true} is VALID [2020-07-11 02:32:13,346 INFO L280 TraceCheckUtils]: 12: Hoare triple {47#true} ~b~0 := 0; {47#true} is VALID [2020-07-11 02:32:13,346 INFO L280 TraceCheckUtils]: 13: Hoare triple {47#true} ~j~0 := 1; {47#true} is VALID [2020-07-11 02:32:13,347 INFO L280 TraceCheckUtils]: 14: Hoare triple {47#true} assume 0 != ~flag~0; {47#true} is VALID [2020-07-11 02:32:13,347 INFO L280 TraceCheckUtils]: 15: Hoare triple {47#true} ~i~0 := 0; {47#true} is VALID [2020-07-11 02:32:13,354 INFO L280 TraceCheckUtils]: 16: Hoare triple {47#true} assume !true; {48#false} is VALID [2020-07-11 02:32:13,355 INFO L280 TraceCheckUtils]: 17: Hoare triple {48#false} assume 0 != ~flag~0; {48#false} is VALID [2020-07-11 02:32:13,355 INFO L263 TraceCheckUtils]: 18: Hoare triple {48#false} call __VERIFIER_assert((if ~a~0 % 4294967296 == ~b~0 % 4294967296 then 1 else 0)); {48#false} is VALID [2020-07-11 02:32:13,355 INFO L280 TraceCheckUtils]: 19: Hoare triple {48#false} ~cond := #in~cond; {48#false} is VALID [2020-07-11 02:32:13,356 INFO L280 TraceCheckUtils]: 20: Hoare triple {48#false} assume 0 == ~cond; {48#false} is VALID [2020-07-11 02:32:13,356 INFO L280 TraceCheckUtils]: 21: Hoare triple {48#false} assume !false; {48#false} is VALID [2020-07-11 02:32:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-11 02:32:13,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323959501] [2020-07-11 02:32:13,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-11 02:32:13,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-11 02:32:13,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943772748] [2020-07-11 02:32:13,373 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-11 02:32:13,377 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-11 02:32:13,381 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-11 02:32:13,437 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:32:13,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-11 02:32:13,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-11 02:32:13,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-11 02:32:13,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-11 02:32:13,453 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-07-11 02:32:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:32:13,589 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-07-11 02:32:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-11 02:32:13,590 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-11 02:32:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-11 02:32:13,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-11 02:32:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2020-07-11 02:32:13,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-11 02:32:13,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2020-07-11 02:32:13,612 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 64 transitions. [2020-07-11 02:32:13,780 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 64 edges. 64 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:32:13,796 INFO L225 Difference]: With dead ends: 57 [2020-07-11 02:32:13,796 INFO L226 Difference]: Without dead ends: 37 [2020-07-11 02:32:13,801 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 [2020-07-11 02:32:13,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-11 02:32:13,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-11 02:32:13,864 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-11 02:32:13,865 INFO L82 GeneralOperation]: Start isEquivalent. First operand 37 states. Second operand 37 states. [2020-07-11 02:32:13,866 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand 37 states. [2020-07-11 02:32:13,866 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 37 states. [2020-07-11 02:32:13,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:32:13,873 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-07-11 02:32:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-07-11 02:32:13,874 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:32:13,874 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:32:13,875 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand 37 states. [2020-07-11 02:32:13,875 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 37 states. [2020-07-11 02:32:13,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:32:13,881 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-07-11 02:32:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-07-11 02:32:13,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:32:13,883 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:32:13,883 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-11 02:32:13,884 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-11 02:32:13,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-11 02:32:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-07-11 02:32:13,901 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 22 [2020-07-11 02:32:13,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-11 02:32:13,902 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-07-11 02:32:13,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-11 02:32:13,903 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 37 states and 39 transitions. [2020-07-11 02:32:13,971 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:32:13,971 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-07-11 02:32:13,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-11 02:32:13,973 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 02:32:13,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 02:32:13,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-11 02:32:13,974 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 02:32:13,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 02:32:13,975 INFO L82 PathProgramCache]: Analyzing trace with hash 779060326, now seen corresponding path program 1 times [2020-07-11 02:32:13,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 02:32:13,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621106136] [2020-07-11 02:32:13,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 02:32:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:32:14,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-11 02:32:14,046 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.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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-11 02:32:14,057 INFO L168 Benchmark]: Toolchain (without parser) took 1806.21 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 104.8 MB in the beginning and 96.6 MB in the end (delta: 8.2 MB). Peak memory consumption was 72.2 MB. Max. memory is 7.1 GB. [2020-07-11 02:32:14,063 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 139.5 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-11 02:32:14,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.15 ms. Allocated memory is still 139.5 MB. Free memory was 104.6 MB in the beginning and 94.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-11 02:32:14,067 INFO L168 Benchmark]: Boogie Preprocessor took 128.42 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 94.5 MB in the beginning and 182.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-11 02:32:14,068 INFO L168 Benchmark]: RCFGBuilder took 398.09 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 161.1 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-07-11 02:32:14,069 INFO L168 Benchmark]: TraceAbstraction took 1001.14 ms. Allocated memory is still 203.4 MB. Free memory was 161.1 MB in the beginning and 96.6 MB in the end (delta: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 7.1 GB. [2020-07-11 02:32:14,083 INFO L336 ainManager$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 139.5 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.15 ms. Allocated memory is still 139.5 MB. Free memory was 104.6 MB in the beginning and 94.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.42 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 94.5 MB in the beginning and 182.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 398.09 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 161.1 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1001.14 ms. Allocated memory is still 203.4 MB. Free memory was 161.1 MB in the beginning and 96.6 MB in the end (delta: 64.5 MB). Peak memory consumption was 64.5 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...