/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test29-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:30:21,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:30:21,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:30:21,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:30:21,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:30:21,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:30:21,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:30:21,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:30:21,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:30:21,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:30:21,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:30:21,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:30:21,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:30:21,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:30:21,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:30:21,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:30:21,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:30:21,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:30:21,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:30:21,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:30:21,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:30:21,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:30:21,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:30:21,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:30:21,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 22:30:21,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 22:30:21,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 22:30:21,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 22:30:21,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 22:30:21,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 22:30:21,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 22:30:21,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 22:30:21,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 22:30:21,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 22:30:21,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 22:30:21,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 22:30:21,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 22:30:21,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 22:30:21,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:30:21,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:30:21,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:30:21,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:30:21,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:30:21,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:30:21,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:30:21,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:30:21,324 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:30:21,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:30:21,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:30:21,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:30:21,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:30:21,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:30:21,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:30:21,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:30:21,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:30:21,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:30:21,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:30:21,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:30:21,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:30:21,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:30:21,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:30:21,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:30:21,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:30:21,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:30:21,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:30:21,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:30:21,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:30:21,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:30:21,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:30:21,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:30:21,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:30:21,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:30:21,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:30:21,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:30:21,618 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:30:21,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:30:21,620 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:30:21,621 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-1.c [2020-07-17 22:30:21,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5cdb8e52/b2c0139cc86d4258a731f108666c42c7/FLAG4f20b1f55 [2020-07-17 22:30:22,121 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:30:22,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-1.c [2020-07-17 22:30:22,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5cdb8e52/b2c0139cc86d4258a731f108666c42c7/FLAG4f20b1f55 [2020-07-17 22:30:22,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5cdb8e52/b2c0139cc86d4258a731f108666c42c7 [2020-07-17 22:30:22,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:30:22,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:30:22,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:30:22,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:30:22,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:30:22,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:30:22" (1/1) ... [2020-07-17 22:30:22,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b09878f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:22, skipping insertion in model container [2020-07-17 22:30:22,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:30:22" (1/1) ... [2020-07-17 22:30:22,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:30:22,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:30:22,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:30:22,902 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:30:22,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:30:22,943 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:30:22,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:22 WrapperNode [2020-07-17 22:30:22,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:30:22,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:30:22,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:30:22,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:30:23,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:22" (1/1) ... [2020-07-17 22:30:23,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:22" (1/1) ... [2020-07-17 22:30:23,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:22" (1/1) ... [2020-07-17 22:30:23,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:22" (1/1) ... [2020-07-17 22:30:23,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:22" (1/1) ... [2020-07-17 22:30:23,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:22" (1/1) ... [2020-07-17 22:30:23,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:22" (1/1) ... [2020-07-17 22:30:23,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:30:23,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:30:23,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:30:23,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:30:23,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:22" (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 [2020-07-17 22:30:23,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:30:23,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:30:23,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:30:23,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:30:23,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:30:23,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:30:23,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 22:30:23,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:30:23,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:30:23,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:30:23,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:30:23,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:30:23,575 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:30:23,576 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 22:30:23,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:30:23 BoogieIcfgContainer [2020-07-17 22:30:23,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:30:23,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:30:23,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:30:23,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:30:23,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:30:22" (1/3) ... [2020-07-17 22:30:23,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b58e9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:30:23, skipping insertion in model container [2020-07-17 22:30:23,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:22" (2/3) ... [2020-07-17 22:30:23,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b58e9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:30:23, skipping insertion in model container [2020-07-17 22:30:23,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:30:23" (3/3) ... [2020-07-17 22:30:23,589 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-1.c [2020-07-17 22:30:23,597 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:30:23,604 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:30:23,618 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:30:23,641 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:30:23,641 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:30:23,641 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:30:23,641 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:30:23,642 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:30:23,642 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:30:23,642 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:30:23,642 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:30:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-17 22:30:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 22:30:23,668 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:30:23,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:30:23,669 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:30:23,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:30:23,676 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2020-07-17 22:30:23,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:30:23,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868141471] [2020-07-17 22:30:23,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:30:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:30:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:30:23,946 INFO L280 TraceCheckUtils]: 0: Hoare triple {28#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {21#true} is VALID [2020-07-17 22:30:23,947 INFO L280 TraceCheckUtils]: 1: Hoare triple {21#true} assume true; {21#true} is VALID [2020-07-17 22:30:23,947 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} #35#return; {21#true} is VALID [2020-07-17 22:30:23,954 INFO L263 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {28#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:30:23,954 INFO L280 TraceCheckUtils]: 1: Hoare triple {28#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {21#true} is VALID [2020-07-17 22:30:23,955 INFO L280 TraceCheckUtils]: 2: Hoare triple {21#true} assume true; {21#true} is VALID [2020-07-17 22:30:23,955 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {21#true} {21#true} #35#return; {21#true} is VALID [2020-07-17 22:30:23,955 INFO L263 TraceCheckUtils]: 4: Hoare triple {21#true} call #t~ret5 := main(); {21#true} is VALID [2020-07-17 22:30:23,956 INFO L280 TraceCheckUtils]: 5: Hoare triple {21#true} call ~#d1~0.base, ~#d1~0.offset := #Ultimate.allocOnStack(4);call ~#d2~0.base, ~#d2~0.offset := #Ultimate.allocOnStack(4);assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~n~0 := #t~nondet0;havoc #t~nondet0; {21#true} is VALID [2020-07-17 22:30:23,958 INFO L280 TraceCheckUtils]: 6: Hoare triple {21#true} assume 0 != ~n~0;#t~ite1.base, #t~ite1.offset := ~#d1~0.base, ~#d1~0.offset; {26#(and (= |main_~#d1~0.base| |main_#t~ite1.base|) (= |main_#t~ite1.offset| |main_~#d1~0.offset|))} is VALID [2020-07-17 22:30:23,963 INFO L280 TraceCheckUtils]: 7: Hoare triple {26#(and (= |main_~#d1~0.base| |main_#t~ite1.base|) (= |main_#t~ite1.offset| |main_~#d1~0.offset|))} ~pd~0.base, ~pd~0.offset := #t~ite1.base, #t~ite1.offset;havoc #t~ite1.base, #t~ite1.offset;assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#d1~0.base, ~#d1~0.offset, 4);havoc #t~nondet2; {27#(and (= |main_~#d1~0.offset| main_~pd~0.offset) (= |main_~#d1~0.base| main_~pd~0.base))} is VALID [2020-07-17 22:30:23,965 INFO L280 TraceCheckUtils]: 8: Hoare triple {27#(and (= |main_~#d1~0.offset| main_~pd~0.offset) (= |main_~#d1~0.base| main_~pd~0.base))} assume !(~pd~0.base == ~#d1~0.base && ~pd~0.offset == ~#d1~0.offset);call write~int(0, ~pd~0.base, ~pd~0.offset, 1); {22#false} is VALID [2020-07-17 22:30:23,966 INFO L280 TraceCheckUtils]: 9: Hoare triple {22#false} #t~short4 := ~pd~0.base == ~#d2~0.base && ~pd~0.offset == ~#d2~0.offset; {22#false} is VALID [2020-07-17 22:30:23,968 INFO L280 TraceCheckUtils]: 10: Hoare triple {22#false} assume #t~short4;call #t~mem3 := read~int(~#d1~0.base, ~#d1~0.offset, 4);#t~short4 := 0 != #t~mem3; {22#false} is VALID [2020-07-17 22:30:23,968 INFO L280 TraceCheckUtils]: 11: Hoare triple {22#false} assume #t~short4;havoc #t~mem3;havoc #t~short4; {22#false} is VALID [2020-07-17 22:30:23,969 INFO L280 TraceCheckUtils]: 12: Hoare triple {22#false} assume !false; {22#false} is VALID [2020-07-17 22:30:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:30:23,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868141471] [2020-07-17 22:30:23,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:30:23,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 22:30:23,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475731257] [2020-07-17 22:30:23,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-17 22:30:23,994 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:30:23,998 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-17 22:30:24,045 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:30:24,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 22:30:24,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:30:24,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 22:30:24,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 22:30:24,060 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-07-17 22:30:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:24,278 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-07-17 22:30:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 22:30:24,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-17 22:30:24,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:30:24,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:30:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2020-07-17 22:30:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:30:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2020-07-17 22:30:24,297 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 41 transitions. [2020-07-17 22:30:24,363 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:30:24,374 INFO L225 Difference]: With dead ends: 34 [2020-07-17 22:30:24,375 INFO L226 Difference]: Without dead ends: 21 [2020-07-17 22:30:24,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 22:30:24,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-17 22:30:24,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2020-07-17 22:30:24,422 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:30:24,423 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand 16 states. [2020-07-17 22:30:24,423 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 16 states. [2020-07-17 22:30:24,424 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 16 states. [2020-07-17 22:30:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:24,428 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-17 22:30:24,428 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-07-17 22:30:24,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:30:24,429 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:30:24,429 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 21 states. [2020-07-17 22:30:24,429 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 21 states. [2020-07-17 22:30:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:24,433 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-17 22:30:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-07-17 22:30:24,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:30:24,434 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:30:24,434 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:30:24,435 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:30:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-17 22:30:24,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-17 22:30:24,438 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2020-07-17 22:30:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:30:24,439 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-17 22:30:24,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 22:30:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-17 22:30:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 22:30:24,440 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:30:24,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:30:24,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:30:24,441 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:30:24,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:30:24,442 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2020-07-17 22:30:24,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:30:24,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428787909] [2020-07-17 22:30:24,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:30:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:30:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:30:24,601 INFO L280 TraceCheckUtils]: 0: Hoare triple {144#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {135#true} is VALID [2020-07-17 22:30:24,602 INFO L280 TraceCheckUtils]: 1: Hoare triple {135#true} assume true; {135#true} is VALID [2020-07-17 22:30:24,602 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {135#true} {135#true} #35#return; {135#true} is VALID [2020-07-17 22:30:24,604 INFO L263 TraceCheckUtils]: 0: Hoare triple {135#true} call ULTIMATE.init(); {144#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:30:24,604 INFO L280 TraceCheckUtils]: 1: Hoare triple {144#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {135#true} is VALID [2020-07-17 22:30:24,604 INFO L280 TraceCheckUtils]: 2: Hoare triple {135#true} assume true; {135#true} is VALID [2020-07-17 22:30:24,605 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {135#true} {135#true} #35#return; {135#true} is VALID [2020-07-17 22:30:24,605 INFO L263 TraceCheckUtils]: 4: Hoare triple {135#true} call #t~ret5 := main(); {135#true} is VALID [2020-07-17 22:30:24,605 INFO L280 TraceCheckUtils]: 5: Hoare triple {135#true} call ~#d1~0.base, ~#d1~0.offset := #Ultimate.allocOnStack(4);call ~#d2~0.base, ~#d2~0.offset := #Ultimate.allocOnStack(4);assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~n~0 := #t~nondet0;havoc #t~nondet0; {135#true} is VALID [2020-07-17 22:30:24,607 INFO L280 TraceCheckUtils]: 6: Hoare triple {135#true} assume 0 != ~n~0;#t~ite1.base, #t~ite1.offset := ~#d1~0.base, ~#d1~0.offset; {140#(and (= |main_~#d1~0.base| |main_#t~ite1.base|) (= |main_#t~ite1.offset| |main_~#d1~0.offset|))} is VALID [2020-07-17 22:30:24,608 INFO L280 TraceCheckUtils]: 7: Hoare triple {140#(and (= |main_~#d1~0.base| |main_#t~ite1.base|) (= |main_#t~ite1.offset| |main_~#d1~0.offset|))} ~pd~0.base, ~pd~0.offset := #t~ite1.base, #t~ite1.offset;havoc #t~ite1.base, #t~ite1.offset;assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;call write~int(#t~nondet2, ~#d1~0.base, ~#d1~0.offset, 4);havoc #t~nondet2; {141#(and (= |main_~#d1~0.offset| main_~pd~0.offset) (= |main_~#d1~0.base| main_~pd~0.base))} is VALID [2020-07-17 22:30:24,610 INFO L280 TraceCheckUtils]: 8: Hoare triple {141#(and (= |main_~#d1~0.offset| main_~pd~0.offset) (= |main_~#d1~0.base| main_~pd~0.base))} assume ~pd~0.base == ~#d1~0.base && ~pd~0.offset == ~#d1~0.offset;call write~int(0, ~pd~0.base, ~pd~0.offset, 4); {142#(= 0 (select (select |#memory_int| |main_~#d1~0.base|) |main_~#d1~0.offset|))} is VALID [2020-07-17 22:30:24,611 INFO L280 TraceCheckUtils]: 9: Hoare triple {142#(= 0 (select (select |#memory_int| |main_~#d1~0.base|) |main_~#d1~0.offset|))} #t~short4 := ~pd~0.base == ~#d2~0.base && ~pd~0.offset == ~#d2~0.offset; {142#(= 0 (select (select |#memory_int| |main_~#d1~0.base|) |main_~#d1~0.offset|))} is VALID [2020-07-17 22:30:24,612 INFO L280 TraceCheckUtils]: 10: Hoare triple {142#(= 0 (select (select |#memory_int| |main_~#d1~0.base|) |main_~#d1~0.offset|))} assume #t~short4;call #t~mem3 := read~int(~#d1~0.base, ~#d1~0.offset, 4);#t~short4 := 0 != #t~mem3; {143#(not |main_#t~short4|)} is VALID [2020-07-17 22:30:24,613 INFO L280 TraceCheckUtils]: 11: Hoare triple {143#(not |main_#t~short4|)} assume #t~short4;havoc #t~mem3;havoc #t~short4; {136#false} is VALID [2020-07-17 22:30:24,613 INFO L280 TraceCheckUtils]: 12: Hoare triple {136#false} assume !false; {136#false} is VALID [2020-07-17 22:30:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:30:24,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428787909] [2020-07-17 22:30:24,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:30:24,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 22:30:24,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919545472] [2020-07-17 22:30:24,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-17 22:30:24,618 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:30:24,618 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-17 22:30:24,637 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:30:24,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 22:30:24,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:30:24,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 22:30:24,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 22:30:24,639 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2020-07-17 22:30:24,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:24,849 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-07-17 22:30:24,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 22:30:24,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-17 22:30:24,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:30:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-17 22:30:24,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 24 transitions. [2020-07-17 22:30:24,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-17 22:30:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 24 transitions. [2020-07-17 22:30:24,855 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 24 transitions. [2020-07-17 22:30:24,892 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:30:24,893 INFO L225 Difference]: With dead ends: 22 [2020-07-17 22:30:24,893 INFO L226 Difference]: Without dead ends: 14 [2020-07-17 22:30:24,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-17 22:30:24,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-17 22:30:24,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-17 22:30:24,904 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:30:24,904 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand 14 states. [2020-07-17 22:30:24,904 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-17 22:30:24,905 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-17 22:30:24,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:24,906 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-07-17 22:30:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-07-17 22:30:24,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:30:24,907 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:30:24,907 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2020-07-17 22:30:24,908 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2020-07-17 22:30:24,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:24,909 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-07-17 22:30:24,910 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-07-17 22:30:24,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:30:24,910 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:30:24,910 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:30:24,911 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:30:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-17 22:30:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-07-17 22:30:24,912 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-07-17 22:30:24,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:30:24,913 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-07-17 22:30:24,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 22:30:24,913 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-07-17 22:30:24,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 22:30:24,914 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:30:24,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:30:24,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:30:24,915 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:30:24,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:30:24,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2020-07-17 22:30:24,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:30:24,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18560968] [2020-07-17 22:30:24,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:30:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:30:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:30:24,995 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:30:24,997 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:30:24,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 22:30:25,040 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-17 22:30:25,040 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:30:25,040 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:30:25,041 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:30:25,041 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:30:25,041 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:30:25,041 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:30:25,041 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-17 22:30:25,041 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-17 22:30:25,042 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:30:25,042 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:30:25,042 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-17 22:30:25,043 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-17 22:30:25,043 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-17 22:30:25,043 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-17 22:30:25,043 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-17 22:30:25,043 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-17 22:30:25,043 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-17 22:30:25,043 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-17 22:30:25,044 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-17 22:30:25,044 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-17 22:30:25,044 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:30:25,044 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:30:25,045 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:30:25,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:30:25 BoogieIcfgContainer [2020-07-17 22:30:25,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:30:25,056 INFO L168 Benchmark]: Toolchain (without parser) took 2504.06 ms. Allocated memory was 145.8 MB in the beginning and 233.3 MB in the end (delta: 87.6 MB). Free memory was 102.0 MB in the beginning and 143.3 MB in the end (delta: -41.2 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:25,057 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 145.8 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 22:30:25,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.68 ms. Allocated memory is still 145.8 MB. Free memory was 101.6 MB in the beginning and 91.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:25,059 INFO L168 Benchmark]: Boogie Preprocessor took 176.10 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 91.4 MB in the beginning and 182.0 MB in the end (delta: -90.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:25,061 INFO L168 Benchmark]: RCFGBuilder took 459.84 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 163.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:25,063 INFO L168 Benchmark]: TraceAbstraction took 1468.19 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 163.1 MB in the beginning and 143.3 MB in the end (delta: 19.8 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:25,078 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 0.53 ms. Allocated memory is still 145.8 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 392.68 ms. Allocated memory is still 145.8 MB. Free memory was 101.6 MB in the beginning and 91.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 176.10 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 91.4 MB in the beginning and 182.0 MB in the end (delta: -90.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.84 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 163.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1468.19 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 163.1 MB in the beginning and 143.3 MB in the end (delta: 19.8 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] union dummy d1, d2; [L14] int n = __VERIFIER_nondet_int(); [L15] EXPR n ? &d1 : &d2 VAL [d1={3:0}, d2={2:0}, n=0, n ? &d1 : &d2={2:0}] [L15] union dummy *pd = n ? &d1 : &d2; [L16] d1.a = __VERIFIER_nondet_int() [L17] COND FALSE !(pd == &d1) [L20] pd->b = 0 VAL [d1={3:0}, d2={2:0}, n=0, pd={2:0}] [L22] pd == &d2 && d1.a != 0 [L22] EXPR d1.a [L22] pd == &d2 && d1.a != 0 VAL [d1={3:0}, d1.a=-1, d2={2:0}, n=0, pd={2:0}, pd == &d2 && d1.a != 0=1] [L22] COND TRUE pd == &d2 && d1.a != 0 [L28] __VERIFIER_error() VAL [d1={3:0}, d2={2:0}, n=0, pd={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 12 SDslu, 59 SDs, 0 SdLazy, 84 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 948 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 incorrect! Received shutdown request...