/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/ldv-regression/test29-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 05:13:51,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 05:13:51,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 05:13:51,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 05:13:51,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 05:13:51,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 05:13:51,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 05:13:51,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 05:13:51,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 05:13:51,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 05:13:51,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 05:13:51,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 05:13:51,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 05:13:51,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 05:13:51,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 05:13:51,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 05:13:51,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 05:13:51,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 05:13:51,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 05:13:51,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 05:13:51,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 05:13:51,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 05:13:51,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 05:13:51,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 05:13:51,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 05:13:51,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 05:13:51,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 05:13:51,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 05:13:51,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 05:13:51,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 05:13:51,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 05:13:51,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 05:13:51,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 05:13:51,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 05:13:51,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 05:13:51,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 05:13:51,212 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 05:13:51,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 05:13:51,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 05:13:51,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 05:13:51,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 05:13:51,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 05:13:51,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 05:13:51,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 05:13:51,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 05:13:51,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 05:13:51,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 05:13:51,225 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 05:13:51,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 05:13:51,225 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 05:13:51,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 05:13:51,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 05:13:51,226 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 05:13:51,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 05:13:51,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 05:13:51,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 05:13:51,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 05:13:51,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 05:13:51,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 05:13:51,227 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 05:13:51,529 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 05:13:51,545 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 05:13:51,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 05:13:51,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 05:13:51,550 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 05:13:51,551 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-2.c [2020-07-18 05:13:51,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804ff6bb3/dc75cf614494487dbd8e5a238543e90e/FLAG6e1668c36 [2020-07-18 05:13:52,043 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 05:13:52,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-2.c [2020-07-18 05:13:52,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804ff6bb3/dc75cf614494487dbd8e5a238543e90e/FLAG6e1668c36 [2020-07-18 05:13:52,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804ff6bb3/dc75cf614494487dbd8e5a238543e90e [2020-07-18 05:13:52,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 05:13:52,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 05:13:52,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 05:13:52,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 05:13:52,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 05:13:52,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:13:52" (1/1) ... [2020-07-18 05:13:52,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37925895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:52, skipping insertion in model container [2020-07-18 05:13:52,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:13:52" (1/1) ... [2020-07-18 05:13:52,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 05:13:52,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 05:13:52,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 05:13:52,699 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 05:13:52,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 05:13:52,734 INFO L208 MainTranslator]: Completed translation [2020-07-18 05:13:52,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:52 WrapperNode [2020-07-18 05:13:52,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 05:13:52,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 05:13:52,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 05:13:52,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 05:13:52,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:52" (1/1) ... [2020-07-18 05:13:52,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:52" (1/1) ... [2020-07-18 05:13:52,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:52" (1/1) ... [2020-07-18 05:13:52,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:52" (1/1) ... [2020-07-18 05:13:52,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:52" (1/1) ... [2020-07-18 05:13:52,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:52" (1/1) ... [2020-07-18 05:13:52,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:52" (1/1) ... [2020-07-18 05:13:52,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 05:13:52,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 05:13:52,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 05:13:52,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 05:13:52,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:52" (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 05:13:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 05:13:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 05:13:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 05:13:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 05:13:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 05:13:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 05:13:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 05:13:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 05:13:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 05:13:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 05:13:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 05:13:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 05:13:53,330 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 05:13:53,330 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 05:13:53,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:13:53 BoogieIcfgContainer [2020-07-18 05:13:53,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 05:13:53,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 05:13:53,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 05:13:53,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 05:13:53,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 05:13:52" (1/3) ... [2020-07-18 05:13:53,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f1e471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:13:53, skipping insertion in model container [2020-07-18 05:13:53,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:13:52" (2/3) ... [2020-07-18 05:13:53,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f1e471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:13:53, skipping insertion in model container [2020-07-18 05:13:53,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:13:53" (3/3) ... [2020-07-18 05:13:53,343 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-2.c [2020-07-18 05:13:53,354 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 05:13:53,361 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 05:13:53,375 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 05:13:53,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 05:13:53,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 05:13:53,397 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 05:13:53,397 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 05:13:53,397 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 05:13:53,398 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 05:13:53,398 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 05:13:53,398 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 05:13:53,411 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-07-18 05:13:53,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-18 05:13:53,421 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:13:53,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 05:13:53,422 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:13:53,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:13:53,427 INFO L82 PathProgramCache]: Analyzing trace with hash -374520961, now seen corresponding path program 1 times [2020-07-18 05:13:53,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:13:53,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898466028] [2020-07-18 05:13:53,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:13:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:13:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:13:53,668 INFO L280 TraceCheckUtils]: 0: Hoare triple {56#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {48#true} is VALID [2020-07-18 05:13:53,669 INFO L280 TraceCheckUtils]: 1: Hoare triple {48#true} #valid := #valid[0 := 0]; {48#true} is VALID [2020-07-18 05:13:53,670 INFO L280 TraceCheckUtils]: 2: Hoare triple {48#true} assume 0 < #StackHeapBarrier; {48#true} is VALID [2020-07-18 05:13:53,670 INFO L280 TraceCheckUtils]: 3: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-18 05:13:53,671 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {48#true} {48#true} #62#return; {48#true} is VALID [2020-07-18 05:13:53,675 INFO L263 TraceCheckUtils]: 0: Hoare triple {48#true} call ULTIMATE.init(); {56#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:13:53,676 INFO L280 TraceCheckUtils]: 1: Hoare triple {56#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {48#true} is VALID [2020-07-18 05:13:53,676 INFO L280 TraceCheckUtils]: 2: Hoare triple {48#true} #valid := #valid[0 := 0]; {48#true} is VALID [2020-07-18 05:13:53,676 INFO L280 TraceCheckUtils]: 3: Hoare triple {48#true} assume 0 < #StackHeapBarrier; {48#true} is VALID [2020-07-18 05:13:53,677 INFO L280 TraceCheckUtils]: 4: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-18 05:13:53,677 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {48#true} {48#true} #62#return; {48#true} is VALID [2020-07-18 05:13:53,678 INFO L263 TraceCheckUtils]: 6: Hoare triple {48#true} call #t~ret4 := main(); {48#true} is VALID [2020-07-18 05:13:53,678 INFO L280 TraceCheckUtils]: 7: Hoare triple {48#true} SUMMARY for call ~#d1~0.base, ~#d1~0.offset := #Ultimate.allocOnStack(4); srcloc: mainENTRY {48#true} is VALID [2020-07-18 05:13:53,678 INFO L280 TraceCheckUtils]: 8: Hoare triple {48#true} SUMMARY for call ~#d2~0.base, ~#d2~0.offset := #Ultimate.allocOnStack(4); srcloc: L13 {48#true} is VALID [2020-07-18 05:13:53,679 INFO L280 TraceCheckUtils]: 9: Hoare triple {48#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {48#true} is VALID [2020-07-18 05:13:53,679 INFO L280 TraceCheckUtils]: 10: Hoare triple {48#true} ~n~0 := #t~nondet0; {48#true} is VALID [2020-07-18 05:13:53,680 INFO L280 TraceCheckUtils]: 11: Hoare triple {48#true} havoc #t~nondet0; {48#true} is VALID [2020-07-18 05:13:53,680 INFO L280 TraceCheckUtils]: 12: Hoare triple {48#true} assume !(0 != ~n~0); {48#true} is VALID [2020-07-18 05:13:53,681 INFO L280 TraceCheckUtils]: 13: Hoare triple {48#true} #t~ite1.base, #t~ite1.offset := ~#d2~0.base, ~#d2~0.offset; {48#true} is VALID [2020-07-18 05:13:53,681 INFO L280 TraceCheckUtils]: 14: Hoare triple {48#true} ~pd~0.base, ~pd~0.offset := #t~ite1.base, #t~ite1.offset; {48#true} is VALID [2020-07-18 05:13:53,681 INFO L280 TraceCheckUtils]: 15: Hoare triple {48#true} havoc #t~ite1.base, #t~ite1.offset; {48#true} is VALID [2020-07-18 05:13:53,682 INFO L280 TraceCheckUtils]: 16: Hoare triple {48#true} assume ~pd~0.base == ~#d1~0.base && ~pd~0.offset == ~#d1~0.offset; {48#true} is VALID [2020-07-18 05:13:53,682 INFO L280 TraceCheckUtils]: 17: Hoare triple {48#true} SUMMARY for call write~int(0, ~pd~0.base, ~pd~0.offset, 4); srcloc: L17 {48#true} is VALID [2020-07-18 05:13:53,683 INFO L280 TraceCheckUtils]: 18: Hoare triple {48#true} #t~short3 := ~pd~0.base == ~#d2~0.base && ~pd~0.offset == ~#d2~0.offset; {48#true} is VALID [2020-07-18 05:13:53,684 INFO L280 TraceCheckUtils]: 19: Hoare triple {48#true} assume !#t~short3; {55#(not |main_#t~short3|)} is VALID [2020-07-18 05:13:53,685 INFO L280 TraceCheckUtils]: 20: Hoare triple {55#(not |main_#t~short3|)} assume #t~short3; {49#false} is VALID [2020-07-18 05:13:53,686 INFO L280 TraceCheckUtils]: 21: Hoare triple {49#false} havoc #t~short3; {49#false} is VALID [2020-07-18 05:13:53,686 INFO L280 TraceCheckUtils]: 22: Hoare triple {49#false} havoc #t~mem2; {49#false} is VALID [2020-07-18 05:13:53,687 INFO L280 TraceCheckUtils]: 23: Hoare triple {49#false} assume !false; {49#false} is VALID [2020-07-18 05:13:53,690 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 05:13:53,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898466028] [2020-07-18 05:13:53,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:13:53,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-18 05:13:53,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211913800] [2020-07-18 05:13:53,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-18 05:13:53,705 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:13:53,711 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-18 05:13:53,765 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:53,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-18 05:13:53,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:13:53,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-18 05:13:53,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-18 05:13:53,782 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2020-07-18 05:13:54,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:54,065 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-07-18 05:13:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-18 05:13:54,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-18 05:13:54,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:13:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-18 05:13:54,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2020-07-18 05:13:54,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-18 05:13:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2020-07-18 05:13:54,087 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 57 transitions. [2020-07-18 05:13:54,171 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:54,184 INFO L225 Difference]: With dead ends: 54 [2020-07-18 05:13:54,184 INFO L226 Difference]: Without dead ends: 29 [2020-07-18 05:13:54,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-18 05:13:54,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-18 05:13:54,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-18 05:13:54,266 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:13:54,267 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand 29 states. [2020-07-18 05:13:54,267 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand 29 states. [2020-07-18 05:13:54,267 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 29 states. [2020-07-18 05:13:54,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:54,272 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-07-18 05:13:54,272 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-18 05:13:54,273 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:54,273 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:13:54,273 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand 29 states. [2020-07-18 05:13:54,273 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 29 states. [2020-07-18 05:13:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:54,278 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-07-18 05:13:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-18 05:13:54,278 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:54,279 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:13:54,279 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:13:54,279 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:13:54,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-18 05:13:54,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-18 05:13:54,283 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 24 [2020-07-18 05:13:54,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:13:54,284 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-18 05:13:54,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-18 05:13:54,284 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 29 states and 30 transitions. [2020-07-18 05:13:54,325 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:54,326 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-18 05:13:54,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-18 05:13:54,327 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:13:54,327 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 05:13:54,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 05:13:54,328 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:13:54,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:13:54,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1400624444, now seen corresponding path program 1 times [2020-07-18 05:13:54,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:13:54,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093999632] [2020-07-18 05:13:54,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:13:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:13:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:13:54,471 INFO L280 TraceCheckUtils]: 0: Hoare triple {294#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {283#true} is VALID [2020-07-18 05:13:54,471 INFO L280 TraceCheckUtils]: 1: Hoare triple {283#true} #valid := #valid[0 := 0]; {283#true} is VALID [2020-07-18 05:13:54,472 INFO L280 TraceCheckUtils]: 2: Hoare triple {283#true} assume 0 < #StackHeapBarrier; {283#true} is VALID [2020-07-18 05:13:54,472 INFO L280 TraceCheckUtils]: 3: Hoare triple {283#true} assume true; {283#true} is VALID [2020-07-18 05:13:54,472 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {283#true} {283#true} #62#return; {283#true} is VALID [2020-07-18 05:13:54,474 INFO L263 TraceCheckUtils]: 0: Hoare triple {283#true} call ULTIMATE.init(); {294#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:13:54,474 INFO L280 TraceCheckUtils]: 1: Hoare triple {294#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {283#true} is VALID [2020-07-18 05:13:54,475 INFO L280 TraceCheckUtils]: 2: Hoare triple {283#true} #valid := #valid[0 := 0]; {283#true} is VALID [2020-07-18 05:13:54,475 INFO L280 TraceCheckUtils]: 3: Hoare triple {283#true} assume 0 < #StackHeapBarrier; {283#true} is VALID [2020-07-18 05:13:54,475 INFO L280 TraceCheckUtils]: 4: Hoare triple {283#true} assume true; {283#true} is VALID [2020-07-18 05:13:54,476 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {283#true} {283#true} #62#return; {283#true} is VALID [2020-07-18 05:13:54,476 INFO L263 TraceCheckUtils]: 6: Hoare triple {283#true} call #t~ret4 := main(); {283#true} is VALID [2020-07-18 05:13:54,478 INFO L280 TraceCheckUtils]: 7: Hoare triple {283#true} SUMMARY for call ~#d1~0.base, ~#d1~0.offset := #Ultimate.allocOnStack(4); srcloc: mainENTRY {290#(= 1 (select |#valid| |main_~#d1~0.base|))} is VALID [2020-07-18 05:13:54,479 INFO L280 TraceCheckUtils]: 8: Hoare triple {290#(= 1 (select |#valid| |main_~#d1~0.base|))} SUMMARY for call ~#d2~0.base, ~#d2~0.offset := #Ultimate.allocOnStack(4); srcloc: L13 {291#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:54,480 INFO L280 TraceCheckUtils]: 9: Hoare triple {291#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {291#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:54,481 INFO L280 TraceCheckUtils]: 10: Hoare triple {291#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} ~n~0 := #t~nondet0; {291#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:54,482 INFO L280 TraceCheckUtils]: 11: Hoare triple {291#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} havoc #t~nondet0; {291#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:54,483 INFO L280 TraceCheckUtils]: 12: Hoare triple {291#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} assume !(0 != ~n~0); {291#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:54,484 INFO L280 TraceCheckUtils]: 13: Hoare triple {291#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} #t~ite1.base, #t~ite1.offset := ~#d2~0.base, ~#d2~0.offset; {292#(not (= |main_~#d1~0.base| |main_#t~ite1.base|))} is VALID [2020-07-18 05:13:54,485 INFO L280 TraceCheckUtils]: 14: Hoare triple {292#(not (= |main_~#d1~0.base| |main_#t~ite1.base|))} ~pd~0.base, ~pd~0.offset := #t~ite1.base, #t~ite1.offset; {293#(not (= |main_~#d1~0.base| main_~pd~0.base))} is VALID [2020-07-18 05:13:54,486 INFO L280 TraceCheckUtils]: 15: Hoare triple {293#(not (= |main_~#d1~0.base| main_~pd~0.base))} havoc #t~ite1.base, #t~ite1.offset; {293#(not (= |main_~#d1~0.base| main_~pd~0.base))} is VALID [2020-07-18 05:13:54,488 INFO L280 TraceCheckUtils]: 16: Hoare triple {293#(not (= |main_~#d1~0.base| main_~pd~0.base))} assume ~pd~0.base == ~#d1~0.base && ~pd~0.offset == ~#d1~0.offset; {284#false} is VALID [2020-07-18 05:13:54,488 INFO L280 TraceCheckUtils]: 17: Hoare triple {284#false} SUMMARY for call write~int(0, ~pd~0.base, ~pd~0.offset, 4); srcloc: L17 {284#false} is VALID [2020-07-18 05:13:54,488 INFO L280 TraceCheckUtils]: 18: Hoare triple {284#false} #t~short3 := ~pd~0.base == ~#d2~0.base && ~pd~0.offset == ~#d2~0.offset; {284#false} is VALID [2020-07-18 05:13:54,489 INFO L280 TraceCheckUtils]: 19: Hoare triple {284#false} assume #t~short3; {284#false} is VALID [2020-07-18 05:13:54,489 INFO L280 TraceCheckUtils]: 20: Hoare triple {284#false} SUMMARY for call #t~mem2 := read~int(~#d2~0.base, ~#d2~0.offset, 1); srcloc: L21-1 {284#false} is VALID [2020-07-18 05:13:54,489 INFO L280 TraceCheckUtils]: 21: Hoare triple {284#false} #t~short3 := 0 != #t~mem2; {284#false} is VALID [2020-07-18 05:13:54,490 INFO L280 TraceCheckUtils]: 22: Hoare triple {284#false} assume #t~short3; {284#false} is VALID [2020-07-18 05:13:54,490 INFO L280 TraceCheckUtils]: 23: Hoare triple {284#false} havoc #t~short3; {284#false} is VALID [2020-07-18 05:13:54,490 INFO L280 TraceCheckUtils]: 24: Hoare triple {284#false} havoc #t~mem2; {284#false} is VALID [2020-07-18 05:13:54,490 INFO L280 TraceCheckUtils]: 25: Hoare triple {284#false} assume !false; {284#false} is VALID [2020-07-18 05:13:54,492 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 05:13:54,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093999632] [2020-07-18 05:13:54,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:13:54,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-18 05:13:54,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433220962] [2020-07-18 05:13:54,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-07-18 05:13:54,496 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:13:54,496 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-18 05:13:54,533 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 05:13:54,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-18 05:13:54,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:13:54,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-18 05:13:54,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-18 05:13:54,535 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 7 states. [2020-07-18 05:13:54,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:54,964 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-07-18 05:13:54,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-18 05:13:54,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-07-18 05:13:54,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:13:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 05:13:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 52 transitions. [2020-07-18 05:13:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 05:13:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 52 transitions. [2020-07-18 05:13:54,971 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 52 transitions. [2020-07-18 05:13:55,041 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:55,043 INFO L225 Difference]: With dead ends: 52 [2020-07-18 05:13:55,044 INFO L226 Difference]: Without dead ends: 42 [2020-07-18 05:13:55,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-07-18 05:13:55,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-18 05:13:55,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-07-18 05:13:55,115 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:13:55,115 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand 32 states. [2020-07-18 05:13:55,115 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 32 states. [2020-07-18 05:13:55,116 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 32 states. [2020-07-18 05:13:55,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:55,119 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-07-18 05:13:55,119 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-07-18 05:13:55,120 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:55,121 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:13:55,121 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 42 states. [2020-07-18 05:13:55,121 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 42 states. [2020-07-18 05:13:55,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:55,124 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-07-18 05:13:55,125 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-07-18 05:13:55,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:55,126 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:13:55,126 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:13:55,126 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:13:55,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-18 05:13:55,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-07-18 05:13:55,129 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 26 [2020-07-18 05:13:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:13:55,129 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-07-18 05:13:55,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-18 05:13:55,130 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 32 states and 33 transitions. [2020-07-18 05:13:55,187 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 05:13:55,187 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-07-18 05:13:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-18 05:13:55,188 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:13:55,188 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 05:13:55,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 05:13:55,189 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:13:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:13:55,191 INFO L82 PathProgramCache]: Analyzing trace with hash -316312164, now seen corresponding path program 1 times [2020-07-18 05:13:55,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:13:55,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209726920] [2020-07-18 05:13:55,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:13:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:13:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:13:55,345 INFO L280 TraceCheckUtils]: 0: Hoare triple {569#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {557#true} is VALID [2020-07-18 05:13:55,345 INFO L280 TraceCheckUtils]: 1: Hoare triple {557#true} #valid := #valid[0 := 0]; {557#true} is VALID [2020-07-18 05:13:55,346 INFO L280 TraceCheckUtils]: 2: Hoare triple {557#true} assume 0 < #StackHeapBarrier; {557#true} is VALID [2020-07-18 05:13:55,346 INFO L280 TraceCheckUtils]: 3: Hoare triple {557#true} assume true; {557#true} is VALID [2020-07-18 05:13:55,346 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {557#true} {557#true} #62#return; {557#true} is VALID [2020-07-18 05:13:55,348 INFO L263 TraceCheckUtils]: 0: Hoare triple {557#true} call ULTIMATE.init(); {569#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:13:55,348 INFO L280 TraceCheckUtils]: 1: Hoare triple {569#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {557#true} is VALID [2020-07-18 05:13:55,349 INFO L280 TraceCheckUtils]: 2: Hoare triple {557#true} #valid := #valid[0 := 0]; {557#true} is VALID [2020-07-18 05:13:55,349 INFO L280 TraceCheckUtils]: 3: Hoare triple {557#true} assume 0 < #StackHeapBarrier; {557#true} is VALID [2020-07-18 05:13:55,349 INFO L280 TraceCheckUtils]: 4: Hoare triple {557#true} assume true; {557#true} is VALID [2020-07-18 05:13:55,350 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {557#true} {557#true} #62#return; {557#true} is VALID [2020-07-18 05:13:55,350 INFO L263 TraceCheckUtils]: 6: Hoare triple {557#true} call #t~ret4 := main(); {557#true} is VALID [2020-07-18 05:13:55,350 INFO L280 TraceCheckUtils]: 7: Hoare triple {557#true} SUMMARY for call ~#d1~0.base, ~#d1~0.offset := #Ultimate.allocOnStack(4); srcloc: mainENTRY {557#true} is VALID [2020-07-18 05:13:55,350 INFO L280 TraceCheckUtils]: 8: Hoare triple {557#true} SUMMARY for call ~#d2~0.base, ~#d2~0.offset := #Ultimate.allocOnStack(4); srcloc: L13 {557#true} is VALID [2020-07-18 05:13:55,351 INFO L280 TraceCheckUtils]: 9: Hoare triple {557#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {557#true} is VALID [2020-07-18 05:13:55,351 INFO L280 TraceCheckUtils]: 10: Hoare triple {557#true} ~n~0 := #t~nondet0; {557#true} is VALID [2020-07-18 05:13:55,351 INFO L280 TraceCheckUtils]: 11: Hoare triple {557#true} havoc #t~nondet0; {557#true} is VALID [2020-07-18 05:13:55,352 INFO L280 TraceCheckUtils]: 12: Hoare triple {557#true} assume !(0 != ~n~0); {557#true} is VALID [2020-07-18 05:13:55,353 INFO L280 TraceCheckUtils]: 13: Hoare triple {557#true} #t~ite1.base, #t~ite1.offset := ~#d2~0.base, ~#d2~0.offset; {564#(and (= |main_#t~ite1.offset| |main_~#d2~0.offset|) (= |main_#t~ite1.base| |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:55,354 INFO L280 TraceCheckUtils]: 14: Hoare triple {564#(and (= |main_#t~ite1.offset| |main_~#d2~0.offset|) (= |main_#t~ite1.base| |main_~#d2~0.base|))} ~pd~0.base, ~pd~0.offset := #t~ite1.base, #t~ite1.offset; {565#(and (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:55,354 INFO L280 TraceCheckUtils]: 15: Hoare triple {565#(and (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|))} havoc #t~ite1.base, #t~ite1.offset; {565#(and (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:55,355 INFO L280 TraceCheckUtils]: 16: Hoare triple {565#(and (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|))} assume !(~pd~0.base == ~#d1~0.base && ~pd~0.offset == ~#d1~0.offset); {565#(and (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:55,357 INFO L280 TraceCheckUtils]: 17: Hoare triple {565#(and (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|))} SUMMARY for call write~int(0, ~pd~0.base, ~pd~0.offset, 1); srcloc: L19 {566#(= 0 (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|))} is VALID [2020-07-18 05:13:55,358 INFO L280 TraceCheckUtils]: 18: Hoare triple {566#(= 0 (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|))} #t~short3 := ~pd~0.base == ~#d2~0.base && ~pd~0.offset == ~#d2~0.offset; {566#(= 0 (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|))} is VALID [2020-07-18 05:13:55,359 INFO L280 TraceCheckUtils]: 19: Hoare triple {566#(= 0 (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|))} assume #t~short3; {566#(= 0 (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|))} is VALID [2020-07-18 05:13:55,360 INFO L280 TraceCheckUtils]: 20: Hoare triple {566#(= 0 (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|))} SUMMARY for call #t~mem2 := read~int(~#d2~0.base, ~#d2~0.offset, 1); srcloc: L21-1 {567#(= 0 |main_#t~mem2|)} is VALID [2020-07-18 05:13:55,360 INFO L280 TraceCheckUtils]: 21: Hoare triple {567#(= 0 |main_#t~mem2|)} #t~short3 := 0 != #t~mem2; {568#(not |main_#t~short3|)} is VALID [2020-07-18 05:13:55,361 INFO L280 TraceCheckUtils]: 22: Hoare triple {568#(not |main_#t~short3|)} assume #t~short3; {558#false} is VALID [2020-07-18 05:13:55,362 INFO L280 TraceCheckUtils]: 23: Hoare triple {558#false} havoc #t~short3; {558#false} is VALID [2020-07-18 05:13:55,362 INFO L280 TraceCheckUtils]: 24: Hoare triple {558#false} havoc #t~mem2; {558#false} is VALID [2020-07-18 05:13:55,362 INFO L280 TraceCheckUtils]: 25: Hoare triple {558#false} assume !false; {558#false} is VALID [2020-07-18 05:13:55,364 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 05:13:55,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209726920] [2020-07-18 05:13:55,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:13:55,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-18 05:13:55,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928224576] [2020-07-18 05:13:55,366 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-07-18 05:13:55,366 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:13:55,366 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-18 05:13:55,396 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 05:13:55,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-18 05:13:55,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:13:55,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-18 05:13:55,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-18 05:13:55,397 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 8 states. [2020-07-18 05:13:55,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:55,824 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-07-18 05:13:55,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-18 05:13:55,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-07-18 05:13:55,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:13:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-18 05:13:55,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2020-07-18 05:13:55,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-18 05:13:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2020-07-18 05:13:55,829 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 42 transitions. [2020-07-18 05:13:55,867 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:55,868 INFO L225 Difference]: With dead ends: 42 [2020-07-18 05:13:55,868 INFO L226 Difference]: Without dead ends: 28 [2020-07-18 05:13:55,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-18 05:13:55,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-18 05:13:55,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-18 05:13:55,918 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:13:55,919 INFO L82 GeneralOperation]: Start isEquivalent. First operand 28 states. Second operand 28 states. [2020-07-18 05:13:55,919 INFO L74 IsIncluded]: Start isIncluded. First operand 28 states. Second operand 28 states. [2020-07-18 05:13:55,919 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 28 states. [2020-07-18 05:13:55,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:55,921 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-07-18 05:13:55,921 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-18 05:13:55,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:55,922 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:13:55,922 INFO L74 IsIncluded]: Start isIncluded. First operand 28 states. Second operand 28 states. [2020-07-18 05:13:55,922 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 28 states. [2020-07-18 05:13:55,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:55,924 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-07-18 05:13:55,924 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-18 05:13:55,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:55,925 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:13:55,925 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:13:55,925 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:13:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-18 05:13:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-07-18 05:13:55,927 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2020-07-18 05:13:55,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:13:55,927 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-07-18 05:13:55,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-18 05:13:55,928 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 28 states and 28 transitions. [2020-07-18 05:13:55,962 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:55,963 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-18 05:13:55,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-18 05:13:55,964 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:13:55,964 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 05:13:55,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 05:13:55,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:13:55,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:13:55,965 INFO L82 PathProgramCache]: Analyzing trace with hash -497457956, now seen corresponding path program 1 times [2020-07-18 05:13:55,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:13:55,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188861050] [2020-07-18 05:13:55,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:13:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:13:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 05:13:56,058 INFO L280 TraceCheckUtils]: 0: Hoare triple {788#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {776#true} is VALID [2020-07-18 05:13:56,058 INFO L280 TraceCheckUtils]: 1: Hoare triple {776#true} #valid := #valid[0 := 0]; {776#true} is VALID [2020-07-18 05:13:56,059 INFO L280 TraceCheckUtils]: 2: Hoare triple {776#true} assume 0 < #StackHeapBarrier; {776#true} is VALID [2020-07-18 05:13:56,059 INFO L280 TraceCheckUtils]: 3: Hoare triple {776#true} assume true; {776#true} is VALID [2020-07-18 05:13:56,066 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {776#true} {776#true} #62#return; {776#true} is VALID [2020-07-18 05:13:56,068 INFO L263 TraceCheckUtils]: 0: Hoare triple {776#true} call ULTIMATE.init(); {788#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 05:13:56,069 INFO L280 TraceCheckUtils]: 1: Hoare triple {788#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {776#true} is VALID [2020-07-18 05:13:56,069 INFO L280 TraceCheckUtils]: 2: Hoare triple {776#true} #valid := #valid[0 := 0]; {776#true} is VALID [2020-07-18 05:13:56,070 INFO L280 TraceCheckUtils]: 3: Hoare triple {776#true} assume 0 < #StackHeapBarrier; {776#true} is VALID [2020-07-18 05:13:56,070 INFO L280 TraceCheckUtils]: 4: Hoare triple {776#true} assume true; {776#true} is VALID [2020-07-18 05:13:56,070 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {776#true} {776#true} #62#return; {776#true} is VALID [2020-07-18 05:13:56,071 INFO L263 TraceCheckUtils]: 6: Hoare triple {776#true} call #t~ret4 := main(); {776#true} is VALID [2020-07-18 05:13:56,079 INFO L280 TraceCheckUtils]: 7: Hoare triple {776#true} SUMMARY for call ~#d1~0.base, ~#d1~0.offset := #Ultimate.allocOnStack(4); srcloc: mainENTRY {783#(= 1 (select |#valid| |main_~#d1~0.base|))} is VALID [2020-07-18 05:13:56,080 INFO L280 TraceCheckUtils]: 8: Hoare triple {783#(= 1 (select |#valid| |main_~#d1~0.base|))} SUMMARY for call ~#d2~0.base, ~#d2~0.offset := #Ultimate.allocOnStack(4); srcloc: L13 {784#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:56,081 INFO L280 TraceCheckUtils]: 9: Hoare triple {784#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {784#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:56,081 INFO L280 TraceCheckUtils]: 10: Hoare triple {784#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} ~n~0 := #t~nondet0; {784#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:56,082 INFO L280 TraceCheckUtils]: 11: Hoare triple {784#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} havoc #t~nondet0; {784#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:56,082 INFO L280 TraceCheckUtils]: 12: Hoare triple {784#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} assume 0 != ~n~0; {784#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:56,083 INFO L280 TraceCheckUtils]: 13: Hoare triple {784#(not (= |main_~#d1~0.base| |main_~#d2~0.base|))} #t~ite1.base, #t~ite1.offset := ~#d1~0.base, ~#d1~0.offset; {785#(not (= |main_#t~ite1.base| |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:56,084 INFO L280 TraceCheckUtils]: 14: Hoare triple {785#(not (= |main_#t~ite1.base| |main_~#d2~0.base|))} ~pd~0.base, ~pd~0.offset := #t~ite1.base, #t~ite1.offset; {786#(not (= main_~pd~0.base |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:56,085 INFO L280 TraceCheckUtils]: 15: Hoare triple {786#(not (= main_~pd~0.base |main_~#d2~0.base|))} havoc #t~ite1.base, #t~ite1.offset; {786#(not (= main_~pd~0.base |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:56,085 INFO L280 TraceCheckUtils]: 16: Hoare triple {786#(not (= main_~pd~0.base |main_~#d2~0.base|))} assume ~pd~0.base == ~#d1~0.base && ~pd~0.offset == ~#d1~0.offset; {786#(not (= main_~pd~0.base |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:56,086 INFO L280 TraceCheckUtils]: 17: Hoare triple {786#(not (= main_~pd~0.base |main_~#d2~0.base|))} SUMMARY for call write~int(0, ~pd~0.base, ~pd~0.offset, 4); srcloc: L17 {786#(not (= main_~pd~0.base |main_~#d2~0.base|))} is VALID [2020-07-18 05:13:56,087 INFO L280 TraceCheckUtils]: 18: Hoare triple {786#(not (= main_~pd~0.base |main_~#d2~0.base|))} #t~short3 := ~pd~0.base == ~#d2~0.base && ~pd~0.offset == ~#d2~0.offset; {787#(not |main_#t~short3|)} is VALID [2020-07-18 05:13:56,087 INFO L280 TraceCheckUtils]: 19: Hoare triple {787#(not |main_#t~short3|)} assume #t~short3; {777#false} is VALID [2020-07-18 05:13:56,088 INFO L280 TraceCheckUtils]: 20: Hoare triple {777#false} SUMMARY for call #t~mem2 := read~int(~#d2~0.base, ~#d2~0.offset, 1); srcloc: L21-1 {777#false} is VALID [2020-07-18 05:13:56,088 INFO L280 TraceCheckUtils]: 21: Hoare triple {777#false} #t~short3 := 0 != #t~mem2; {777#false} is VALID [2020-07-18 05:13:56,088 INFO L280 TraceCheckUtils]: 22: Hoare triple {777#false} assume #t~short3; {777#false} is VALID [2020-07-18 05:13:56,088 INFO L280 TraceCheckUtils]: 23: Hoare triple {777#false} havoc #t~short3; {777#false} is VALID [2020-07-18 05:13:56,089 INFO L280 TraceCheckUtils]: 24: Hoare triple {777#false} havoc #t~mem2; {777#false} is VALID [2020-07-18 05:13:56,089 INFO L280 TraceCheckUtils]: 25: Hoare triple {777#false} assume !false; {777#false} is VALID [2020-07-18 05:13:56,090 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 05:13:56,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188861050] [2020-07-18 05:13:56,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 05:13:56,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-18 05:13:56,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168720879] [2020-07-18 05:13:56,092 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-07-18 05:13:56,092 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 05:13:56,092 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-18 05:13:56,118 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 05:13:56,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-18 05:13:56,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 05:13:56,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-18 05:13:56,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-18 05:13:56,119 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 8 states. [2020-07-18 05:13:56,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:56,355 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-07-18 05:13:56,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-18 05:13:56,355 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-07-18 05:13:56,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 05:13:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-18 05:13:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 28 transitions. [2020-07-18 05:13:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-18 05:13:56,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 28 transitions. [2020-07-18 05:13:56,359 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 28 transitions. [2020-07-18 05:13:56,397 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:56,398 INFO L225 Difference]: With dead ends: 28 [2020-07-18 05:13:56,398 INFO L226 Difference]: Without dead ends: 0 [2020-07-18 05:13:56,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-07-18 05:13:56,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-18 05:13:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-18 05:13:56,399 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 05:13:56,399 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-18 05:13:56,400 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 05:13:56,400 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 05:13:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:56,400 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 05:13:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 05:13:56,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:56,401 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:13:56,401 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 05:13:56,401 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 05:13:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 05:13:56,401 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 05:13:56,401 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 05:13:56,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:56,402 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 05:13:56,402 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 05:13:56,402 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 05:13:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-18 05:13:56,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-18 05:13:56,403 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-07-18 05:13:56,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 05:13:56,403 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-18 05:13:56,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-18 05:13:56,403 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-18 05:13:56,403 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 05:13:56,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 05:13:56,404 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 05:13:56,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-18 05:13:56,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-18 05:13:56,864 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-18 05:13:56,865 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-18 05:13:56,865 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-18 05:13:56,865 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-18 05:13:56,865 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-18 05:13:56,865 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-18 05:13:56,865 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-18 05:13:56,865 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-18 05:13:56,866 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-18 05:13:56,866 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 11 29) the Hoare annotation is: true [2020-07-18 05:13:56,866 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (let ((.cse0 (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) (.cse1 (= 1 (select |#valid| |main_~#d1~0.base|)))) (or (and .cse0 .cse1 (not (= main_~pd~0.base |main_~#d2~0.base|))) (and (= |main_~#d2~0.offset| main_~pd~0.offset) .cse0 .cse1))) [2020-07-18 05:13:56,866 INFO L264 CegarLoopResult]: At program point L19-1(lines 16 20) the Hoare annotation is: (let ((.cse0 (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) (.cse1 (= 1 (select |#valid| |main_~#d1~0.base|)))) (or (and .cse0 .cse1 (not (= main_~pd~0.base |main_~#d2~0.base|))) (and (= |main_~#d2~0.offset| main_~pd~0.offset) (= 0 (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|)) .cse0 .cse1))) [2020-07-18 05:13:56,866 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-18 05:13:56,866 INFO L264 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-18 05:13:56,867 INFO L264 CegarLoopResult]: At program point L15-3(line 15) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-18 05:13:56,867 INFO L264 CegarLoopResult]: At program point L15-4(line 15) the Hoare annotation is: (let ((.cse0 (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) (.cse1 (= 1 (select |#valid| |main_~#d1~0.base|)))) (or (and .cse0 .cse1 (not (= |main_#t~ite1.base| |main_~#d2~0.base|))) (and (= |main_#t~ite1.offset| |main_~#d2~0.offset|) .cse0 .cse1))) [2020-07-18 05:13:56,867 INFO L264 CegarLoopResult]: At program point L15-5(line 15) the Hoare annotation is: (let ((.cse2 (= main_~pd~0.base |main_~#d2~0.base|)) (.cse1 (= |main_#t~ite1.base| |main_~#d2~0.base|)) (.cse0 (= 1 (select |#valid| |main_~#d1~0.base|)))) (or (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) .cse0 (not .cse1) (not .cse2)) (and (= |main_~#d2~0.offset| main_~pd~0.offset) .cse2 (= |main_#t~ite1.offset| |main_~#d2~0.offset|) .cse1 .cse0 (not (= |main_~#d1~0.base| |main_#t~ite1.base|))))) [2020-07-18 05:13:56,867 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: false [2020-07-18 05:13:56,868 INFO L264 CegarLoopResult]: At program point L16(lines 16 20) the Hoare annotation is: (let ((.cse0 (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) (.cse1 (= 1 (select |#valid| |main_~#d1~0.base|)))) (or (and .cse0 .cse1 (not (= main_~pd~0.base |main_~#d2~0.base|))) (and (= |main_~#d2~0.offset| main_~pd~0.offset) .cse0 .cse1))) [2020-07-18 05:13:56,868 INFO L271 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-07-18 05:13:56,868 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) (.cse2 (= 1 (select |#valid| |main_~#d1~0.base|))) (.cse0 (= main_~pd~0.base |main_~#d2~0.base|))) (or (and (= |main_~#d2~0.offset| main_~pd~0.offset) (= 0 (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|)) .cse0 .cse1 .cse2) (and .cse1 .cse2 (not |main_#t~short3|) (not .cse0)))) [2020-07-18 05:13:56,868 INFO L264 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (and (= |main_~#d2~0.offset| main_~pd~0.offset) (= 0 (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|)) (= main_~pd~0.base |main_~#d2~0.base|) (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-18 05:13:56,869 INFO L264 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (and (= |main_~#d2~0.offset| main_~pd~0.offset) (= 0 (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|)) (= 0 |main_#t~mem2|) (= main_~pd~0.base |main_~#d2~0.base|) (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-18 05:13:56,869 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 1 (select |#valid| |main_~#d1~0.base|)) (not (= main_~pd~0.base |main_~#d2~0.base|))) [2020-07-18 05:13:56,869 INFO L264 CegarLoopResult]: At program point L21-4(lines 21 23) the Hoare annotation is: (not |main_#t~short3|) [2020-07-18 05:13:56,869 INFO L264 CegarLoopResult]: At program point L21-5(line 21) the Hoare annotation is: false [2020-07-18 05:13:56,869 INFO L264 CegarLoopResult]: At program point L21-6(line 21) the Hoare annotation is: false [2020-07-18 05:13:56,869 INFO L264 CegarLoopResult]: At program point L21-7(line 21) the Hoare annotation is: (not |main_#t~short3|) [2020-07-18 05:13:56,869 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (= 1 (select |#valid| |main_~#d1~0.base|)) [2020-07-18 05:13:56,870 INFO L271 CegarLoopResult]: At program point L21-8(line 21) the Hoare annotation is: true [2020-07-18 05:13:56,870 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 11 29) the Hoare annotation is: true [2020-07-18 05:13:56,870 INFO L264 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-18 05:13:56,870 INFO L271 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: true [2020-07-18 05:13:56,870 INFO L271 CegarLoopResult]: At program point L13-3(line 13) the Hoare annotation is: true [2020-07-18 05:13:56,870 INFO L271 CegarLoopResult]: At program point L13-4(line 13) the Hoare annotation is: true [2020-07-18 05:13:56,870 INFO L271 CegarLoopResult]: At program point L13-5(line 13) the Hoare annotation is: true [2020-07-18 05:13:56,870 INFO L264 CegarLoopResult]: At program point L13-6(line 13) the Hoare annotation is: false [2020-07-18 05:13:56,871 INFO L264 CegarLoopResult]: At program point L13-7(line 13) the Hoare annotation is: false [2020-07-18 05:13:56,871 INFO L264 CegarLoopResult]: At program point L13-8(line 13) the Hoare annotation is: false [2020-07-18 05:13:56,871 INFO L264 CegarLoopResult]: At program point L13-9(line 13) the Hoare annotation is: false [2020-07-18 05:13:56,871 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) the Hoare annotation is: false [2020-07-18 05:13:56,871 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-18 05:13:56,871 INFO L264 CegarLoopResult]: At program point L22(lines 12 29) the Hoare annotation is: false [2020-07-18 05:13:56,872 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-18 05:13:56,872 INFO L264 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-18 05:13:56,899 INFO L163 areAnnotationChecker]: CFG has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 05:13:56,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 05:13:56 BoogieIcfgContainer [2020-07-18 05:13:56,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 05:13:56,912 INFO L168 Benchmark]: Toolchain (without parser) took 4437.86 ms. Allocated memory was 137.4 MB in the beginning and 286.3 MB in the end (delta: 148.9 MB). Free memory was 100.8 MB in the beginning and 252.6 MB in the end (delta: -151.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-18 05:13:56,912 INFO L168 Benchmark]: CDTParser took 0.27 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 05:13:56,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.18 ms. Allocated memory is still 137.4 MB. Free memory was 100.4 MB in the beginning and 90.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-18 05:13:56,914 INFO L168 Benchmark]: Boogie Preprocessor took 143.67 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.2 MB in the beginning and 179.2 MB in the end (delta: -89.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-18 05:13:56,915 INFO L168 Benchmark]: RCFGBuilder took 455.24 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 157.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-07-18 05:13:56,916 INFO L168 Benchmark]: TraceAbstraction took 3571.50 ms. Allocated memory was 201.9 MB in the beginning and 286.3 MB in the end (delta: 84.4 MB). Free memory was 157.2 MB in the beginning and 252.6 MB in the end (delta: -95.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-18 05:13:56,919 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 0.27 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.18 ms. Allocated memory is still 137.4 MB. Free memory was 100.4 MB in the beginning and 90.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.67 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.2 MB in the beginning and 179.2 MB in the end (delta: -89.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.24 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 157.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3571.50 ms. Allocated memory was 201.9 MB in the beginning and 286.3 MB in the end (delta: 84.4 MB). Free memory was 157.2 MB in the beginning and 252.6 MB in the end (delta: -95.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 107 SDslu, 247 SDs, 0 SdLazy, 227 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 45 LocationsWithAnnotation, 45 PreInvPairs, 62 NumberOfFragments, 370 HoareAnnotationTreeSize, 45 FomulaSimplifications, 206 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 45 FomulaSimplificationsInter, 29 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 6009 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...