/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/array-examples/sanfoundry_24-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:47:06,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:47:06,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:47:06,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-18 00:47:06,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:47:06,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:47:06,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:47:06,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:47:06,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:47:06,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:47:06,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:47:06,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:47:06,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:47:06,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:47:06,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:47:06,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:47:06,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:47:06,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:47:06,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:47:06,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:47:06,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:47:06,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:47:06,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:47:06,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:47:06,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:47:06,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:47:06,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:47:06,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:47:06,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:47:06,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:47:06,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:47:06,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:47:06,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:47:06,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:47:06,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:47:06,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:47:06,975 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:47:06,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:47:06,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:47:06,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:47:06,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:47:06,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:47:06,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:47:06,979 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:47:07,268 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:47:07,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:47:07,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:47:07,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:47:07,288 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:47:07,289 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2020-07-18 00:47:07,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e3549909/f91455b0052d46999e091792c1392b34/FLAG8d8595bec [2020-07-18 00:47:07,829 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:47:07,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2020-07-18 00:47:07,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e3549909/f91455b0052d46999e091792c1392b34/FLAG8d8595bec [2020-07-18 00:47:08,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e3549909/f91455b0052d46999e091792c1392b34 [2020-07-18 00:47:08,187 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:47:08,190 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:47:08,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:08,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:47:08,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:47:08,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:08" (1/1) ... [2020-07-18 00:47:08,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de36573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:08, skipping insertion in model container [2020-07-18 00:47:08,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:08" (1/1) ... [2020-07-18 00:47:08,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:47:08,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:47:08,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:08,422 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:47:08,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:08,466 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:47:08,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:08 WrapperNode [2020-07-18 00:47:08,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:08,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:47:08,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:47:08,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:47:08,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:08" (1/1) ... [2020-07-18 00:47:08,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:08" (1/1) ... [2020-07-18 00:47:08,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:08" (1/1) ... [2020-07-18 00:47:08,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:08" (1/1) ... [2020-07-18 00:47:08,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:08" (1/1) ... [2020-07-18 00:47:08,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:08" (1/1) ... [2020-07-18 00:47:08,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:08" (1/1) ... [2020-07-18 00:47:08,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:47:08,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:47:08,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:47:08,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:47:08,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:47:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:47:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:47:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:47:08,652 INFO L138 BoogieDeclarations]: Found implementation of procedure printEven [2020-07-18 00:47:08,652 INFO L138 BoogieDeclarations]: Found implementation of procedure printOdd [2020-07-18 00:47:08,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:47:08,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:47:08,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:47:08,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:47:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure printEven [2020-07-18 00:47:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure printOdd [2020-07-18 00:47:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:47:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 00:47:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:47:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:47:08,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:47:08,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:47:08,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:47:09,125 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:47:09,125 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-18 00:47:09,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:09 BoogieIcfgContainer [2020-07-18 00:47:09,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:47:09,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:47:09,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:47:09,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:47:09,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:47:08" (1/3) ... [2020-07-18 00:47:09,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446b6e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:09, skipping insertion in model container [2020-07-18 00:47:09,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:08" (2/3) ... [2020-07-18 00:47:09,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446b6e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:09, skipping insertion in model container [2020-07-18 00:47:09,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:09" (3/3) ... [2020-07-18 00:47:09,139 INFO L109 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2020-07-18 00:47:09,151 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:47:09,159 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:47:09,174 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:47:09,197 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:47:09,197 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:47:09,197 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:47:09,197 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:47:09,197 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:47:09,198 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:47:09,198 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:47:09,198 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:47:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-07-18 00:47:09,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-18 00:47:09,226 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:09,227 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, 1, 1] [2020-07-18 00:47:09,227 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:09,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:09,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1447674201, now seen corresponding path program 1 times [2020-07-18 00:47:09,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:09,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626017562] [2020-07-18 00:47:09,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:09,449 INFO L280 TraceCheckUtils]: 0: Hoare triple {75#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {68#true} is VALID [2020-07-18 00:47:09,450 INFO L280 TraceCheckUtils]: 1: Hoare triple {68#true} #valid := #valid[0 := 0]; {68#true} is VALID [2020-07-18 00:47:09,451 INFO L280 TraceCheckUtils]: 2: Hoare triple {68#true} assume 0 < #StackHeapBarrier; {68#true} is VALID [2020-07-18 00:47:09,451 INFO L280 TraceCheckUtils]: 3: Hoare triple {68#true} assume true; {68#true} is VALID [2020-07-18 00:47:09,452 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {68#true} {68#true} #109#return; {68#true} is VALID [2020-07-18 00:47:09,456 INFO L263 TraceCheckUtils]: 0: Hoare triple {68#true} call ULTIMATE.init(); {75#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:09,456 INFO L280 TraceCheckUtils]: 1: Hoare triple {75#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {68#true} is VALID [2020-07-18 00:47:09,457 INFO L280 TraceCheckUtils]: 2: Hoare triple {68#true} #valid := #valid[0 := 0]; {68#true} is VALID [2020-07-18 00:47:09,457 INFO L280 TraceCheckUtils]: 3: Hoare triple {68#true} assume 0 < #StackHeapBarrier; {68#true} is VALID [2020-07-18 00:47:09,458 INFO L280 TraceCheckUtils]: 4: Hoare triple {68#true} assume true; {68#true} is VALID [2020-07-18 00:47:09,458 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {68#true} {68#true} #109#return; {68#true} is VALID [2020-07-18 00:47:09,458 INFO L263 TraceCheckUtils]: 6: Hoare triple {68#true} call #t~ret9 := main(); {68#true} is VALID [2020-07-18 00:47:09,459 INFO L280 TraceCheckUtils]: 7: Hoare triple {68#true} SUMMARY for call ~#array~0.base, ~#array~0.offset := #Ultimate.allocOnStack(400000); srcloc: mainENTRY {68#true} is VALID [2020-07-18 00:47:09,460 INFO L280 TraceCheckUtils]: 8: Hoare triple {68#true} havoc ~i~0; {68#true} is VALID [2020-07-18 00:47:09,460 INFO L280 TraceCheckUtils]: 9: Hoare triple {68#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {68#true} is VALID [2020-07-18 00:47:09,461 INFO L280 TraceCheckUtils]: 10: Hoare triple {68#true} ~num~0 := #t~nondet0; {68#true} is VALID [2020-07-18 00:47:09,461 INFO L280 TraceCheckUtils]: 11: Hoare triple {68#true} havoc #t~nondet0; {68#true} is VALID [2020-07-18 00:47:09,461 INFO L280 TraceCheckUtils]: 12: Hoare triple {68#true} ~i~0 := 0; {68#true} is VALID [2020-07-18 00:47:09,463 INFO L280 TraceCheckUtils]: 13: Hoare triple {68#true} assume !true; {69#false} is VALID [2020-07-18 00:47:09,464 INFO L280 TraceCheckUtils]: 14: Hoare triple {69#false} ~i~0 := 0; {69#false} is VALID [2020-07-18 00:47:09,464 INFO L280 TraceCheckUtils]: 15: Hoare triple {69#false} assume !!(~i~0 < ~num~0); {69#false} is VALID [2020-07-18 00:47:09,464 INFO L280 TraceCheckUtils]: 16: Hoare triple {69#false} SUMMARY for call #t~mem4 := read~int(~#array~0.base, ~#array~0.offset + 4 * ~i~0, 4); srcloc: L23 {69#false} is VALID [2020-07-18 00:47:09,465 INFO L280 TraceCheckUtils]: 17: Hoare triple {69#false} assume 0 == (if #t~mem4 < 0 && 0 != #t~mem4 % 2 then #t~mem4 % 2 - 2 else #t~mem4 % 2); {69#false} is VALID [2020-07-18 00:47:09,465 INFO L280 TraceCheckUtils]: 18: Hoare triple {69#false} havoc #t~mem4; {69#false} is VALID [2020-07-18 00:47:09,466 INFO L280 TraceCheckUtils]: 19: Hoare triple {69#false} SUMMARY for call #t~mem5 := read~int(~#array~0.base, ~#array~0.offset + 4 * ~i~0, 4); srcloc: L25 {69#false} is VALID [2020-07-18 00:47:09,466 INFO L263 TraceCheckUtils]: 20: Hoare triple {69#false} call printEven(#t~mem5); {69#false} is VALID [2020-07-18 00:47:09,467 INFO L280 TraceCheckUtils]: 21: Hoare triple {69#false} ~i := #in~i; {69#false} is VALID [2020-07-18 00:47:09,467 INFO L263 TraceCheckUtils]: 22: Hoare triple {69#false} call __VERIFIER_assert((if 0 == (if ~i < 0 && 0 != ~i % 2 then ~i % 2 - 2 else ~i % 2) then 1 else 0)); {69#false} is VALID [2020-07-18 00:47:09,468 INFO L280 TraceCheckUtils]: 23: Hoare triple {69#false} ~cond := #in~cond; {69#false} is VALID [2020-07-18 00:47:09,468 INFO L280 TraceCheckUtils]: 24: Hoare triple {69#false} assume 0 == ~cond; {69#false} is VALID [2020-07-18 00:47:09,468 INFO L280 TraceCheckUtils]: 25: Hoare triple {69#false} assume !false; {69#false} is VALID [2020-07-18 00:47:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:47:09,475 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:09,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626017562] [2020-07-18 00:47:09,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:09,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 00:47:09,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033407019] [2020-07-18 00:47:09,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-18 00:47:09,490 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:09,494 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 00:47:09,542 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:09,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 00:47:09,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:09,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 00:47:09,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:47:09,555 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-07-18 00:47:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:09,969 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2020-07-18 00:47:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 00:47:09,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-18 00:47:09,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:09,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2020-07-18 00:47:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2020-07-18 00:47:09,994 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 130 transitions. [2020-07-18 00:47:10,176 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 130 edges. 130 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:10,192 INFO L225 Difference]: With dead ends: 110 [2020-07-18 00:47:10,192 INFO L226 Difference]: Without dead ends: 58 [2020-07-18 00:47:10,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:47:10,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-18 00:47:10,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-07-18 00:47:10,292 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:10,293 INFO L82 GeneralOperation]: Start isEquivalent. First operand 58 states. Second operand 58 states. [2020-07-18 00:47:10,293 INFO L74 IsIncluded]: Start isIncluded. First operand 58 states. Second operand 58 states. [2020-07-18 00:47:10,294 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 58 states. [2020-07-18 00:47:10,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:10,302 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-07-18 00:47:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-07-18 00:47:10,303 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:10,304 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:10,304 INFO L74 IsIncluded]: Start isIncluded. First operand 58 states. Second operand 58 states. [2020-07-18 00:47:10,304 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 58 states. [2020-07-18 00:47:10,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:10,311 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-07-18 00:47:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-07-18 00:47:10,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:10,313 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:10,313 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:10,313 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-18 00:47:10,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-07-18 00:47:10,320 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 26 [2020-07-18 00:47:10,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:10,321 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-07-18 00:47:10,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 00:47:10,321 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 58 states and 63 transitions. [2020-07-18 00:47:10,412 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-07-18 00:47:10,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-18 00:47:10,414 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:10,414 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, 1, 1] [2020-07-18 00:47:10,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:47:10,415 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:10,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:10,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1779758876, now seen corresponding path program 1 times [2020-07-18 00:47:10,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:10,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712446984] [2020-07-18 00:47:10,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:10,536 INFO L280 TraceCheckUtils]: 0: Hoare triple {540#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {530#true} is VALID [2020-07-18 00:47:10,537 INFO L280 TraceCheckUtils]: 1: Hoare triple {530#true} #valid := #valid[0 := 0]; {530#true} is VALID [2020-07-18 00:47:10,537 INFO L280 TraceCheckUtils]: 2: Hoare triple {530#true} assume 0 < #StackHeapBarrier; {530#true} is VALID [2020-07-18 00:47:10,538 INFO L280 TraceCheckUtils]: 3: Hoare triple {530#true} assume true; {530#true} is VALID [2020-07-18 00:47:10,538 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {530#true} {530#true} #109#return; {530#true} is VALID [2020-07-18 00:47:10,539 INFO L263 TraceCheckUtils]: 0: Hoare triple {530#true} call ULTIMATE.init(); {540#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:10,540 INFO L280 TraceCheckUtils]: 1: Hoare triple {540#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {530#true} is VALID [2020-07-18 00:47:10,540 INFO L280 TraceCheckUtils]: 2: Hoare triple {530#true} #valid := #valid[0 := 0]; {530#true} is VALID [2020-07-18 00:47:10,540 INFO L280 TraceCheckUtils]: 3: Hoare triple {530#true} assume 0 < #StackHeapBarrier; {530#true} is VALID [2020-07-18 00:47:10,541 INFO L280 TraceCheckUtils]: 4: Hoare triple {530#true} assume true; {530#true} is VALID [2020-07-18 00:47:10,541 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {530#true} {530#true} #109#return; {530#true} is VALID [2020-07-18 00:47:10,541 INFO L263 TraceCheckUtils]: 6: Hoare triple {530#true} call #t~ret9 := main(); {530#true} is VALID [2020-07-18 00:47:10,541 INFO L280 TraceCheckUtils]: 7: Hoare triple {530#true} SUMMARY for call ~#array~0.base, ~#array~0.offset := #Ultimate.allocOnStack(400000); srcloc: mainENTRY {530#true} is VALID [2020-07-18 00:47:10,542 INFO L280 TraceCheckUtils]: 8: Hoare triple {530#true} havoc ~i~0; {530#true} is VALID [2020-07-18 00:47:10,542 INFO L280 TraceCheckUtils]: 9: Hoare triple {530#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {530#true} is VALID [2020-07-18 00:47:10,542 INFO L280 TraceCheckUtils]: 10: Hoare triple {530#true} ~num~0 := #t~nondet0; {530#true} is VALID [2020-07-18 00:47:10,543 INFO L280 TraceCheckUtils]: 11: Hoare triple {530#true} havoc #t~nondet0; {530#true} is VALID [2020-07-18 00:47:10,544 INFO L280 TraceCheckUtils]: 12: Hoare triple {530#true} ~i~0 := 0; {537#(= 0 main_~i~0)} is VALID [2020-07-18 00:47:10,545 INFO L280 TraceCheckUtils]: 13: Hoare triple {537#(= 0 main_~i~0)} assume !(~i~0 < ~num~0); {538#(<= main_~num~0 0)} is VALID [2020-07-18 00:47:10,545 INFO L280 TraceCheckUtils]: 14: Hoare triple {538#(<= main_~num~0 0)} ~i~0 := 0; {539#(and (<= main_~num~0 0) (= 0 main_~i~0))} is VALID [2020-07-18 00:47:10,546 INFO L280 TraceCheckUtils]: 15: Hoare triple {539#(and (<= main_~num~0 0) (= 0 main_~i~0))} assume !!(~i~0 < ~num~0); {531#false} is VALID [2020-07-18 00:47:10,547 INFO L280 TraceCheckUtils]: 16: Hoare triple {531#false} SUMMARY for call #t~mem4 := read~int(~#array~0.base, ~#array~0.offset + 4 * ~i~0, 4); srcloc: L23 {531#false} is VALID [2020-07-18 00:47:10,547 INFO L280 TraceCheckUtils]: 17: Hoare triple {531#false} assume 0 == (if #t~mem4 < 0 && 0 != #t~mem4 % 2 then #t~mem4 % 2 - 2 else #t~mem4 % 2); {531#false} is VALID [2020-07-18 00:47:10,547 INFO L280 TraceCheckUtils]: 18: Hoare triple {531#false} havoc #t~mem4; {531#false} is VALID [2020-07-18 00:47:10,548 INFO L280 TraceCheckUtils]: 19: Hoare triple {531#false} SUMMARY for call #t~mem5 := read~int(~#array~0.base, ~#array~0.offset + 4 * ~i~0, 4); srcloc: L25 {531#false} is VALID [2020-07-18 00:47:10,548 INFO L263 TraceCheckUtils]: 20: Hoare triple {531#false} call printEven(#t~mem5); {531#false} is VALID [2020-07-18 00:47:10,548 INFO L280 TraceCheckUtils]: 21: Hoare triple {531#false} ~i := #in~i; {531#false} is VALID [2020-07-18 00:47:10,549 INFO L263 TraceCheckUtils]: 22: Hoare triple {531#false} call __VERIFIER_assert((if 0 == (if ~i < 0 && 0 != ~i % 2 then ~i % 2 - 2 else ~i % 2) then 1 else 0)); {531#false} is VALID [2020-07-18 00:47:10,549 INFO L280 TraceCheckUtils]: 23: Hoare triple {531#false} ~cond := #in~cond; {531#false} is VALID [2020-07-18 00:47:10,549 INFO L280 TraceCheckUtils]: 24: Hoare triple {531#false} assume 0 == ~cond; {531#false} is VALID [2020-07-18 00:47:10,550 INFO L280 TraceCheckUtils]: 25: Hoare triple {531#false} assume !false; {531#false} is VALID [2020-07-18 00:47:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:47:10,555 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:10,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712446984] [2020-07-18 00:47:10,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:10,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-18 00:47:10,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091903218] [2020-07-18 00:47:10,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-07-18 00:47:10,558 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:10,558 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-18 00:47:10,590 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:10,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-18 00:47:10,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:10,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-18 00:47:10,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-18 00:47:10,591 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2020-07-18 00:47:11,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:11,169 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2020-07-18 00:47:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-18 00:47:11,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-07-18 00:47:11,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-18 00:47:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2020-07-18 00:47:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-18 00:47:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2020-07-18 00:47:11,182 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 141 transitions. [2020-07-18 00:47:11,374 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 141 edges. 141 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:11,378 INFO L225 Difference]: With dead ends: 125 [2020-07-18 00:47:11,378 INFO L226 Difference]: Without dead ends: 84 [2020-07-18 00:47:11,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-18 00:47:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-07-18 00:47:11,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 60. [2020-07-18 00:47:11,447 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:11,447 INFO L82 GeneralOperation]: Start isEquivalent. First operand 84 states. Second operand 60 states. [2020-07-18 00:47:11,447 INFO L74 IsIncluded]: Start isIncluded. First operand 84 states. Second operand 60 states. [2020-07-18 00:47:11,447 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 60 states. [2020-07-18 00:47:11,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:11,454 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-07-18 00:47:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-07-18 00:47:11,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:11,458 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:11,459 INFO L74 IsIncluded]: Start isIncluded. First operand 60 states. Second operand 84 states. [2020-07-18 00:47:11,459 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 84 states. [2020-07-18 00:47:11,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:11,465 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-07-18 00:47:11,465 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-07-18 00:47:11,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:11,469 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:11,469 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:11,469 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:11,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-18 00:47:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-07-18 00:47:11,474 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 26 [2020-07-18 00:47:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:11,474 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-07-18 00:47:11,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-18 00:47:11,475 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 60 states and 65 transitions. [2020-07-18 00:47:11,546 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:11,546 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-07-18 00:47:11,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-18 00:47:11,548 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:11,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:47:11,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:47:11,548 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:11,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:11,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1567937856, now seen corresponding path program 1 times [2020-07-18 00:47:11,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:11,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057053466] [2020-07-18 00:47:11,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:12,032 INFO L280 TraceCheckUtils]: 0: Hoare triple {1095#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {1081#true} is VALID [2020-07-18 00:47:12,033 INFO L280 TraceCheckUtils]: 1: Hoare triple {1081#true} #valid := #valid[0 := 0]; {1081#true} is VALID [2020-07-18 00:47:12,033 INFO L280 TraceCheckUtils]: 2: Hoare triple {1081#true} assume 0 < #StackHeapBarrier; {1081#true} is VALID [2020-07-18 00:47:12,033 INFO L280 TraceCheckUtils]: 3: Hoare triple {1081#true} assume true; {1081#true} is VALID [2020-07-18 00:47:12,034 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {1081#true} {1081#true} #109#return; {1081#true} is VALID [2020-07-18 00:47:12,035 INFO L263 TraceCheckUtils]: 0: Hoare triple {1081#true} call ULTIMATE.init(); {1095#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:12,035 INFO L280 TraceCheckUtils]: 1: Hoare triple {1095#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {1081#true} is VALID [2020-07-18 00:47:12,036 INFO L280 TraceCheckUtils]: 2: Hoare triple {1081#true} #valid := #valid[0 := 0]; {1081#true} is VALID [2020-07-18 00:47:12,036 INFO L280 TraceCheckUtils]: 3: Hoare triple {1081#true} assume 0 < #StackHeapBarrier; {1081#true} is VALID [2020-07-18 00:47:12,036 INFO L280 TraceCheckUtils]: 4: Hoare triple {1081#true} assume true; {1081#true} is VALID [2020-07-18 00:47:12,037 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {1081#true} {1081#true} #109#return; {1081#true} is VALID [2020-07-18 00:47:12,037 INFO L263 TraceCheckUtils]: 6: Hoare triple {1081#true} call #t~ret9 := main(); {1081#true} is VALID [2020-07-18 00:47:12,037 INFO L280 TraceCheckUtils]: 7: Hoare triple {1081#true} SUMMARY for call ~#array~0.base, ~#array~0.offset := #Ultimate.allocOnStack(400000); srcloc: mainENTRY {1081#true} is VALID [2020-07-18 00:47:12,037 INFO L280 TraceCheckUtils]: 8: Hoare triple {1081#true} havoc ~i~0; {1081#true} is VALID [2020-07-18 00:47:12,038 INFO L280 TraceCheckUtils]: 9: Hoare triple {1081#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {1081#true} is VALID [2020-07-18 00:47:12,038 INFO L280 TraceCheckUtils]: 10: Hoare triple {1081#true} ~num~0 := #t~nondet0; {1081#true} is VALID [2020-07-18 00:47:12,038 INFO L280 TraceCheckUtils]: 11: Hoare triple {1081#true} havoc #t~nondet0; {1081#true} is VALID [2020-07-18 00:47:12,039 INFO L280 TraceCheckUtils]: 12: Hoare triple {1081#true} ~i~0 := 0; {1081#true} is VALID [2020-07-18 00:47:12,039 INFO L280 TraceCheckUtils]: 13: Hoare triple {1081#true} assume !!(~i~0 < ~num~0); {1081#true} is VALID [2020-07-18 00:47:12,039 INFO L280 TraceCheckUtils]: 14: Hoare triple {1081#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {1081#true} is VALID [2020-07-18 00:47:12,040 INFO L280 TraceCheckUtils]: 15: Hoare triple {1081#true} SUMMARY for call write~int(#t~nondet2, ~#array~0.base, ~#array~0.offset + 4 * ~i~0, 4); srcloc: L18-1 {1081#true} is VALID [2020-07-18 00:47:12,040 INFO L280 TraceCheckUtils]: 16: Hoare triple {1081#true} havoc #t~nondet2; {1081#true} is VALID [2020-07-18 00:47:12,040 INFO L280 TraceCheckUtils]: 17: Hoare triple {1081#true} #t~post1 := ~i~0; {1081#true} is VALID [2020-07-18 00:47:12,041 INFO L280 TraceCheckUtils]: 18: Hoare triple {1081#true} ~i~0 := 1 + #t~post1; {1081#true} is VALID [2020-07-18 00:47:12,041 INFO L280 TraceCheckUtils]: 19: Hoare triple {1081#true} havoc #t~post1; {1081#true} is VALID [2020-07-18 00:47:12,041 INFO L280 TraceCheckUtils]: 20: Hoare triple {1081#true} assume !(~i~0 < ~num~0); {1081#true} is VALID [2020-07-18 00:47:12,042 INFO L280 TraceCheckUtils]: 21: Hoare triple {1081#true} ~i~0 := 0; {1081#true} is VALID [2020-07-18 00:47:12,042 INFO L280 TraceCheckUtils]: 22: Hoare triple {1081#true} assume !!(~i~0 < ~num~0); {1081#true} is VALID [2020-07-18 00:47:12,043 INFO L280 TraceCheckUtils]: 23: Hoare triple {1081#true} SUMMARY for call #t~mem4 := read~int(~#array~0.base, ~#array~0.offset + 4 * ~i~0, 4); srcloc: L23 {1088#(or (= (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)) |main_#t~mem4|) (not (= |main_#t~mem4| (* 2 (div |main_#t~mem4| 2)))))} is VALID [2020-07-18 00:47:12,045 INFO L280 TraceCheckUtils]: 24: Hoare triple {1088#(or (= (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)) |main_#t~mem4|) (not (= |main_#t~mem4| (* 2 (div |main_#t~mem4| 2)))))} assume 0 == (if #t~mem4 < 0 && 0 != #t~mem4 % 2 then #t~mem4 % 2 - 2 else #t~mem4 % 2); {1089#(<= (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)) (* 2 (div (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)) 2)))} is VALID [2020-07-18 00:47:12,045 INFO L280 TraceCheckUtils]: 25: Hoare triple {1089#(<= (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)) (* 2 (div (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)) 2)))} havoc #t~mem4; {1089#(<= (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)) (* 2 (div (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)) 2)))} is VALID [2020-07-18 00:47:12,046 INFO L280 TraceCheckUtils]: 26: Hoare triple {1089#(<= (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)) (* 2 (div (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)) 2)))} SUMMARY for call #t~mem5 := read~int(~#array~0.base, ~#array~0.offset + 4 * ~i~0, 4); srcloc: L25 {1090#(<= |main_#t~mem5| (* 2 (div |main_#t~mem5| 2)))} is VALID [2020-07-18 00:47:12,047 INFO L263 TraceCheckUtils]: 27: Hoare triple {1090#(<= |main_#t~mem5| (* 2 (div |main_#t~mem5| 2)))} call printEven(#t~mem5); {1091#(<= |printEven_#in~i| (* 2 (div |printEven_#in~i| 2)))} is VALID [2020-07-18 00:47:12,048 INFO L280 TraceCheckUtils]: 28: Hoare triple {1091#(<= |printEven_#in~i| (* 2 (div |printEven_#in~i| 2)))} ~i := #in~i; {1092#(<= printEven_~i (* 2 (div printEven_~i 2)))} is VALID [2020-07-18 00:47:12,050 INFO L263 TraceCheckUtils]: 29: Hoare triple {1092#(<= printEven_~i (* 2 (div printEven_~i 2)))} call __VERIFIER_assert((if 0 == (if ~i < 0 && 0 != ~i % 2 then ~i % 2 - 2 else ~i % 2) then 1 else 0)); {1093#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-18 00:47:12,051 INFO L280 TraceCheckUtils]: 30: Hoare triple {1093#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {1094#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-18 00:47:12,051 INFO L280 TraceCheckUtils]: 31: Hoare triple {1094#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {1082#false} is VALID [2020-07-18 00:47:12,052 INFO L280 TraceCheckUtils]: 32: Hoare triple {1082#false} assume !false; {1082#false} is VALID [2020-07-18 00:47:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:47:12,054 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:12,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057053466] [2020-07-18 00:47:12,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:12,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-18 00:47:12,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414988749] [2020-07-18 00:47:12,056 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-07-18 00:47:12,056 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:12,056 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2020-07-18 00:47:12,090 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:12,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-18 00:47:12,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:12,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-18 00:47:12,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-18 00:47:12,091 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 10 states. [2020-07-18 00:47:13,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:13,327 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-07-18 00:47:13,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-18 00:47:13,327 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-07-18 00:47:13,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-18 00:47:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 70 transitions. [2020-07-18 00:47:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-18 00:47:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 70 transitions. [2020-07-18 00:47:13,334 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states and 70 transitions. [2020-07-18 00:47:13,445 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 70 edges. 70 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:13,447 INFO L225 Difference]: With dead ends: 68 [2020-07-18 00:47:13,447 INFO L226 Difference]: Without dead ends: 66 [2020-07-18 00:47:13,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-07-18 00:47:13,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-18 00:47:13,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-07-18 00:47:13,525 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:13,525 INFO L82 GeneralOperation]: Start isEquivalent. First operand 66 states. Second operand 64 states. [2020-07-18 00:47:13,525 INFO L74 IsIncluded]: Start isIncluded. First operand 66 states. Second operand 64 states. [2020-07-18 00:47:13,526 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 64 states. [2020-07-18 00:47:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:13,530 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-07-18 00:47:13,530 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-07-18 00:47:13,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:13,531 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:13,531 INFO L74 IsIncluded]: Start isIncluded. First operand 64 states. Second operand 66 states. [2020-07-18 00:47:13,531 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 66 states. [2020-07-18 00:47:13,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:13,535 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-07-18 00:47:13,535 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-07-18 00:47:13,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:13,536 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:13,536 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:13,536 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-18 00:47:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-07-18 00:47:13,539 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 33 [2020-07-18 00:47:13,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:13,540 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-07-18 00:47:13,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-18 00:47:13,540 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 64 states and 68 transitions. [2020-07-18 00:47:13,633 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 68 edges. 68 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-07-18 00:47:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-18 00:47:13,635 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:13,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:47:13,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 00:47:13,635 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:13,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:13,636 INFO L82 PathProgramCache]: Analyzing trace with hash -741681537, now seen corresponding path program 1 times [2020-07-18 00:47:13,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:13,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965726408] [2020-07-18 00:47:13,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:13,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-18 00:47:13,654 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:290) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 00:47:13,661 INFO L168 Benchmark]: Toolchain (without parser) took 5471.47 ms. Allocated memory was 137.4 MB in the beginning and 284.7 MB in the end (delta: 147.3 MB). Free memory was 101.2 MB in the beginning and 144.5 MB in the end (delta: -43.3 MB). Peak memory consumption was 104.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:13,662 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-18 00:47:13,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.03 ms. Allocated memory is still 137.4 MB. Free memory was 100.8 MB in the beginning and 90.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:13,664 INFO L168 Benchmark]: Boogie Preprocessor took 128.22 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.5 MB in the beginning and 178.8 MB in the end (delta: -88.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:13,664 INFO L168 Benchmark]: RCFGBuilder took 535.04 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 150.7 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:13,665 INFO L168 Benchmark]: TraceAbstraction took 4526.23 ms. Allocated memory was 201.3 MB in the beginning and 284.7 MB in the end (delta: 83.4 MB). Free memory was 150.0 MB in the beginning and 144.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 88.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:13,670 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 0.18 ms. Allocated memory is still 137.4 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.03 ms. Allocated memory is still 137.4 MB. Free memory was 100.8 MB in the beginning and 90.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.22 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.5 MB in the beginning and 178.8 MB in the end (delta: -88.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 535.04 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 150.7 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4526.23 ms. Allocated memory was 201.3 MB in the beginning and 284.7 MB in the end (delta: 83.4 MB). Free memory was 150.0 MB in the beginning and 144.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 88.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...