/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/loops/veris.c_sendmail_tTflag_arr_one_loop.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 06:34:43,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 06:34:43,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 06:34:43,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 06:34:43,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 06:34:43,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 06:34:43,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 06:34:43,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 06:34:43,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 06:34:43,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 06:34:43,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 06:34:43,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 06:34:43,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 06:34:43,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 06:34:43,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 06:34:43,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 06:34:43,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 06:34:43,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 06:34:43,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 06:34:43,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 06:34:43,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 06:34:43,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 06:34:43,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 06:34:43,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 06:34:43,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 06:34:43,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 06:34:43,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 06:34:43,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 06:34:43,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 06:34:43,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 06:34:43,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 06:34:43,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 06:34:43,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 06:34:43,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 06:34:43,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 06:34:43,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 06:34:43,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 06:34:43,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 06:34:43,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 06:34:43,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 06:34:43,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 06:34:43,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 06:34:43,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 06:34:43,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 06:34:43,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 06:34:43,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 06:34:43,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 06:34:43,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 06:34:43,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 06:34:43,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 06:34:43,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 06:34:43,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 06:34:43,575 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 06:34:43,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 06:34:43,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 06:34:43,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 06:34:43,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 06:34:43,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 06:34:43,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 06:34:43,577 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-18 06:34:43,854 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 06:34:43,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 06:34:43,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 06:34:43,877 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 06:34:43,878 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 06:34:43,878 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-07-18 06:34:43,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14c3a150/5e42b9f4081f4eb2b884cfd863c22ac0/FLAG4cb590b90 [2020-07-18 06:34:44,361 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 06:34:44,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-07-18 06:34:44,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14c3a150/5e42b9f4081f4eb2b884cfd863c22ac0/FLAG4cb590b90 [2020-07-18 06:34:44,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f14c3a150/5e42b9f4081f4eb2b884cfd863c22ac0 [2020-07-18 06:34:44,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 06:34:44,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 06:34:44,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 06:34:44,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 06:34:44,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 06:34:44,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:34:44" (1/1) ... [2020-07-18 06:34:44,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a53c336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:44, skipping insertion in model container [2020-07-18 06:34:44,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:34:44" (1/1) ... [2020-07-18 06:34:44,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 06:34:44,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 06:34:45,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:34:45,012 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 06:34:45,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:34:45,055 INFO L208 MainTranslator]: Completed translation [2020-07-18 06:34:45,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:45 WrapperNode [2020-07-18 06:34:45,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 06:34:45,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 06:34:45,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 06:34:45,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 06:34:45,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:45" (1/1) ... [2020-07-18 06:34:45,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:45" (1/1) ... [2020-07-18 06:34:45,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:45" (1/1) ... [2020-07-18 06:34:45,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:45" (1/1) ... [2020-07-18 06:34:45,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:45" (1/1) ... [2020-07-18 06:34:45,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:45" (1/1) ... [2020-07-18 06:34:45,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:45" (1/1) ... [2020-07-18 06:34:45,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 06:34:45,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 06:34:45,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 06:34:45,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 06:34:45,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 06:34:45,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 06:34:45,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 06:34:45,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 06:34:45,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 06:34:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 06:34:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-18 06:34:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 06:34:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 06:34:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 06:34:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 06:34:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 06:34:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 06:34:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 06:34:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 06:34:45,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 06:34:45,633 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-18 06:34:45,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:34:45 BoogieIcfgContainer [2020-07-18 06:34:45,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 06:34:45,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 06:34:45,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 06:34:45,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 06:34:45,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 06:34:44" (1/3) ... [2020-07-18 06:34:45,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a5ea32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:34:45, skipping insertion in model container [2020-07-18 06:34:45,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:45" (2/3) ... [2020-07-18 06:34:45,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a5ea32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:34:45, skipping insertion in model container [2020-07-18 06:34:45,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:34:45" (3/3) ... [2020-07-18 06:34:45,646 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2020-07-18 06:34:45,656 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 06:34:45,663 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 06:34:45,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 06:34:45,696 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 06:34:45,696 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 06:34:45,696 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 06:34:45,697 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 06:34:45,697 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 06:34:45,697 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 06:34:45,697 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 06:34:45,697 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 06:34:45,711 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-18 06:34:45,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-18 06:34:45,720 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:34:45,721 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] [2020-07-18 06:34:45,721 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:34:45,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:34:45,726 INFO L82 PathProgramCache]: Analyzing trace with hash 435763839, now seen corresponding path program 1 times [2020-07-18 06:34:45,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:34:45,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683121463] [2020-07-18 06:34:45,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:34:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:34:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:34:45,937 INFO L280 TraceCheckUtils]: 0: Hoare triple {61#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {54#true} is VALID [2020-07-18 06:34:45,937 INFO L280 TraceCheckUtils]: 1: Hoare triple {54#true} #valid := #valid[0 := 0]; {54#true} is VALID [2020-07-18 06:34:45,938 INFO L280 TraceCheckUtils]: 2: Hoare triple {54#true} assume 0 < #StackHeapBarrier; {54#true} is VALID [2020-07-18 06:34:45,938 INFO L280 TraceCheckUtils]: 3: Hoare triple {54#true} assume true; {54#true} is VALID [2020-07-18 06:34:45,939 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {54#true} {54#true} #76#return; {54#true} is VALID [2020-07-18 06:34:45,943 INFO L263 TraceCheckUtils]: 0: Hoare triple {54#true} call ULTIMATE.init(); {61#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 06:34:45,943 INFO L280 TraceCheckUtils]: 1: Hoare triple {61#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {54#true} is VALID [2020-07-18 06:34:45,943 INFO L280 TraceCheckUtils]: 2: Hoare triple {54#true} #valid := #valid[0 := 0]; {54#true} is VALID [2020-07-18 06:34:45,944 INFO L280 TraceCheckUtils]: 3: Hoare triple {54#true} assume 0 < #StackHeapBarrier; {54#true} is VALID [2020-07-18 06:34:45,944 INFO L280 TraceCheckUtils]: 4: Hoare triple {54#true} assume true; {54#true} is VALID [2020-07-18 06:34:45,945 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {54#true} {54#true} #76#return; {54#true} is VALID [2020-07-18 06:34:45,945 INFO L263 TraceCheckUtils]: 6: Hoare triple {54#true} call #t~ret5 := main(); {54#true} is VALID [2020-07-18 06:34:45,945 INFO L280 TraceCheckUtils]: 7: Hoare triple {54#true} SUMMARY for call ~#in~0.base, ~#in~0.offset := #Ultimate.allocOnStack(11); srcloc: mainENTRY {54#true} is VALID [2020-07-18 06:34:45,946 INFO L280 TraceCheckUtils]: 8: Hoare triple {54#true} havoc ~s~0.base, ~s~0.offset; {54#true} is VALID [2020-07-18 06:34:45,946 INFO L280 TraceCheckUtils]: 9: Hoare triple {54#true} havoc ~c~0; {54#true} is VALID [2020-07-18 06:34:45,947 INFO L280 TraceCheckUtils]: 10: Hoare triple {54#true} havoc ~i~0; {54#true} is VALID [2020-07-18 06:34:45,947 INFO L280 TraceCheckUtils]: 11: Hoare triple {54#true} havoc ~j~0; {54#true} is VALID [2020-07-18 06:34:45,947 INFO L280 TraceCheckUtils]: 12: Hoare triple {54#true} havoc ~idx_in~0; {54#true} is VALID [2020-07-18 06:34:45,948 INFO L280 TraceCheckUtils]: 13: Hoare triple {54#true} ~i~0 := 0; {54#true} is VALID [2020-07-18 06:34:45,948 INFO L280 TraceCheckUtils]: 14: Hoare triple {54#true} assume !(~i~0 % 4294967296 < 10); {54#true} is VALID [2020-07-18 06:34:45,949 INFO L280 TraceCheckUtils]: 15: Hoare triple {54#true} SUMMARY for call write~int(0, ~#in~0.base, 10 + ~#in~0.offset, 1); srcloc: L18-7 {54#true} is VALID [2020-07-18 06:34:45,949 INFO L280 TraceCheckUtils]: 16: Hoare triple {54#true} ~idx_in~0 := 0; {54#true} is VALID [2020-07-18 06:34:45,949 INFO L280 TraceCheckUtils]: 17: Hoare triple {54#true} ~s~0.base, ~s~0.offset := ~#in~0.base, ~#in~0.offset; {54#true} is VALID [2020-07-18 06:34:45,950 INFO L280 TraceCheckUtils]: 18: Hoare triple {54#true} ~i~0 := 0; {54#true} is VALID [2020-07-18 06:34:45,950 INFO L280 TraceCheckUtils]: 19: Hoare triple {54#true} SUMMARY for call #t~mem2 := read~int(~#in~0.base, ~#in~0.offset + ~idx_in~0, 1); srcloc: L26 {54#true} is VALID [2020-07-18 06:34:45,950 INFO L280 TraceCheckUtils]: 20: Hoare triple {54#true} ~c~0 := #t~mem2; {54#true} is VALID [2020-07-18 06:34:45,951 INFO L280 TraceCheckUtils]: 21: Hoare triple {54#true} havoc #t~mem2; {54#true} is VALID [2020-07-18 06:34:45,952 INFO L280 TraceCheckUtils]: 22: Hoare triple {54#true} assume !true; {55#false} is VALID [2020-07-18 06:34:45,953 INFO L263 TraceCheckUtils]: 23: Hoare triple {55#false} call __VERIFIER_assert((if ~i~0 % 4294967296 >= 0 then 1 else 0)); {55#false} is VALID [2020-07-18 06:34:45,953 INFO L280 TraceCheckUtils]: 24: Hoare triple {55#false} ~cond := #in~cond; {55#false} is VALID [2020-07-18 06:34:45,953 INFO L280 TraceCheckUtils]: 25: Hoare triple {55#false} assume 0 == ~cond; {55#false} is VALID [2020-07-18 06:34:45,954 INFO L280 TraceCheckUtils]: 26: Hoare triple {55#false} assume !false; {55#false} is VALID [2020-07-18 06:34:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 06:34:45,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683121463] [2020-07-18 06:34:45,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 06:34:45,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 06:34:45,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871944381] [2020-07-18 06:34:45,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-07-18 06:34:45,971 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:34:45,975 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 06:34:46,026 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:34:46,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 06:34:46,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:34:46,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 06:34:46,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 06:34:46,042 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-07-18 06:34:46,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:34:46,320 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-07-18 06:34:46,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 06:34:46,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-07-18 06:34:46,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:34:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 06:34:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2020-07-18 06:34:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 06:34:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2020-07-18 06:34:46,338 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 88 transitions. [2020-07-18 06:34:46,475 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 88 edges. 88 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:34:46,488 INFO L225 Difference]: With dead ends: 81 [2020-07-18 06:34:46,489 INFO L226 Difference]: Without dead ends: 42 [2020-07-18 06:34:46,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 06:34:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-18 06:34:46,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-07-18 06:34:46,561 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:34:46,561 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand 42 states. [2020-07-18 06:34:46,562 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-18 06:34:46,562 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-18 06:34:46,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:34:46,567 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2020-07-18 06:34:46,568 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-07-18 06:34:46,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:34:46,569 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:34:46,569 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-18 06:34:46,569 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-18 06:34:46,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:34:46,574 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2020-07-18 06:34:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-07-18 06:34:46,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:34:46,576 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:34:46,576 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:34:46,576 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:34:46,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-18 06:34:46,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-07-18 06:34:46,581 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 27 [2020-07-18 06:34:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:34:46,582 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-07-18 06:34:46,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 06:34:46,582 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 42 states and 43 transitions. [2020-07-18 06:34:46,632 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:34:46,632 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-07-18 06:34:46,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-18 06:34:46,633 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:34:46,634 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] [2020-07-18 06:34:46,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 06:34:46,634 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:34:46,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:34:46,635 INFO L82 PathProgramCache]: Analyzing trace with hash 424681587, now seen corresponding path program 1 times [2020-07-18 06:34:46,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:34:46,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192997391] [2020-07-18 06:34:46,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:34:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:34:46,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 06:34:46,696 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 06:34:46,702 INFO L168 Benchmark]: Toolchain (without parser) took 1899.22 ms. Allocated memory was 137.4 MB in the beginning and 232.8 MB in the end (delta: 95.4 MB). Free memory was 101.2 MB in the beginning and 174.5 MB in the end (delta: -73.3 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:46,702 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory is still 119.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-18 06:34:46,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.71 ms. Allocated memory is still 137.4 MB. Free memory was 100.8 MB in the beginning and 90.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:46,704 INFO L168 Benchmark]: Boogie Preprocessor took 121.76 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.3 MB in the beginning and 179.1 MB in the end (delta: -88.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:46,705 INFO L168 Benchmark]: RCFGBuilder took 458.38 ms. Allocated memory is still 201.3 MB. Free memory was 179.1 MB in the beginning and 155.9 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:46,706 INFO L168 Benchmark]: TraceAbstraction took 1060.77 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 154.9 MB in the beginning and 174.5 MB in the end (delta: -19.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:46,711 INFO L336 ainManager$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 is still 119.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 251.71 ms. Allocated memory is still 137.4 MB. Free memory was 100.8 MB in the beginning and 90.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.76 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.3 MB in the beginning and 179.1 MB in the end (delta: -88.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.38 ms. Allocated memory is still 201.3 MB. Free memory was 179.1 MB in the beginning and 155.9 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1060.77 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 154.9 MB in the beginning and 174.5 MB in the end (delta: -19.6 MB). Peak memory consumption was 11.9 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...