/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/array-fpi/modnf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 12:44:44,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 12:44:44,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 12:44:44,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 12:44:44,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 12:44:44,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 12:44:44,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 12:44:44,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 12:44:44,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 12:44:44,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 12:44:44,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 12:44:44,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 12:44:44,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 12:44:44,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 12:44:44,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 12:44:44,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 12:44:44,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 12:44:44,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 12:44:44,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 12:44:44,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 12:44:44,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 12:44:44,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 12:44:44,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 12:44:44,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 12:44:44,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 12:44:44,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-08 12:44:44,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-08 12:44:44,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-08 12:44:44,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-08 12:44:44,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-08 12:44:44,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-08 12:44:44,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-08 12:44:44,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-08 12:44:44,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 12:44:44,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 12:44:44,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 12:44:44,919 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 [2020-07-08 12:44:44,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 12:44:44,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 12:44:44,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-08 12:44:44,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-08 12:44:44,946 INFO L138 SettingsManager]: * Use SBE=true [2020-07-08 12:44:44,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 12:44:44,947 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 12:44:44,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 12:44:44,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 12:44:44,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 12:44:44,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 12:44:44,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 12:44:44,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 12:44:44,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 12:44:44,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 12:44:44,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 12:44:44,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 12:44:44,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 12:44:44,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-08 12:44:44,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 12:44:44,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 12:44:44,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 12:44:44,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 12:44:44,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-08 12:44:44,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-08 12:44:44,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-08 12:44:44,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-08 12:44:44,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 12:44:44,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-08 12:44:44,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-08 12:44:45,308 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 12:44:45,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 12:44:45,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 12:44:45,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 12:44:45,329 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 12:44:45,329 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modnf.c [2020-07-08 12:44:45,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/394c83a6d/28df6d84f3074847be95ebf8057d4182/FLAGbc4911a02 [2020-07-08 12:44:45,869 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 12:44:45,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modnf.c [2020-07-08 12:44:45,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/394c83a6d/28df6d84f3074847be95ebf8057d4182/FLAGbc4911a02 [2020-07-08 12:44:46,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/394c83a6d/28df6d84f3074847be95ebf8057d4182 [2020-07-08 12:44:46,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 12:44:46,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 12:44:46,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 12:44:46,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 12:44:46,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 12:44:46,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:44:46" (1/1) ... [2020-07-08 12:44:46,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a948c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:46, skipping insertion in model container [2020-07-08 12:44:46,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:44:46" (1/1) ... [2020-07-08 12:44:46,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 12:44:46,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 12:44:46,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:44:46,552 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 12:44:46,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:44:46,598 INFO L208 MainTranslator]: Completed translation [2020-07-08 12:44:46,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:46 WrapperNode [2020-07-08 12:44:46,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 12:44:46,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 12:44:46,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 12:44:46,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 12:44:46,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:46" (1/1) ... [2020-07-08 12:44:46,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:46" (1/1) ... [2020-07-08 12:44:46,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:46" (1/1) ... [2020-07-08 12:44:46,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:46" (1/1) ... [2020-07-08 12:44:46,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:46" (1/1) ... [2020-07-08 12:44:46,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:46" (1/1) ... [2020-07-08 12:44:46,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:46" (1/1) ... [2020-07-08 12:44:46,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 12:44:46,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 12:44:46,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 12:44:46,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 12:44:46,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:46" (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 [2020-07-08 12:44:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 12:44:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 12:44:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-08 12:44:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 12:44:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 12:44:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 12:44:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-08 12:44:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-08 12:44:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 12:44:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 12:44:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-08 12:44:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 12:44:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-08 12:44:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-08 12:44:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-08 12:44:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-08 12:44:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-08 12:44:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 12:44:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 12:44:47,244 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 12:44:47,244 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-08 12:44:47,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:44:47 BoogieIcfgContainer [2020-07-08 12:44:47,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 12:44:47,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 12:44:47,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 12:44:47,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 12:44:47,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 12:44:46" (1/3) ... [2020-07-08 12:44:47,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4ee96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:44:47, skipping insertion in model container [2020-07-08 12:44:47,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:46" (2/3) ... [2020-07-08 12:44:47,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4ee96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:44:47, skipping insertion in model container [2020-07-08 12:44:47,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:44:47" (3/3) ... [2020-07-08 12:44:47,258 INFO L109 eAbstractionObserver]: Analyzing ICFG modnf.c [2020-07-08 12:44:47,268 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-08 12:44:47,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 12:44:47,290 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 12:44:47,311 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 12:44:47,311 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 12:44:47,312 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-08 12:44:47,312 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 12:44:47,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 12:44:47,312 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 12:44:47,312 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 12:44:47,313 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 12:44:47,332 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-08 12:44:47,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-08 12:44:47,338 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:44:47,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:44:47,340 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:44:47,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:44:47,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-07-08 12:44:47,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:44:47,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467537484] [2020-07-08 12:44:47,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:44:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:47,603 INFO L280 TraceCheckUtils]: 0: Hoare triple {46#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {37#true} is VALID [2020-07-08 12:44:47,603 INFO L280 TraceCheckUtils]: 1: Hoare triple {37#true} assume true; {37#true} is VALID [2020-07-08 12:44:47,604 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {37#true} {37#true} #81#return; {37#true} is VALID [2020-07-08 12:44:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:47,619 INFO L280 TraceCheckUtils]: 0: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2020-07-08 12:44:47,620 INFO L280 TraceCheckUtils]: 1: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2020-07-08 12:44:47,621 INFO L280 TraceCheckUtils]: 2: Hoare triple {38#false} assume true; {38#false} is VALID [2020-07-08 12:44:47,621 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {38#false} {37#true} #77#return; {38#false} is VALID [2020-07-08 12:44:47,624 INFO L263 TraceCheckUtils]: 0: Hoare triple {37#true} call ULTIMATE.init(); {46#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-08 12:44:47,624 INFO L280 TraceCheckUtils]: 1: Hoare triple {46#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {37#true} is VALID [2020-07-08 12:44:47,625 INFO L280 TraceCheckUtils]: 2: Hoare triple {37#true} assume true; {37#true} is VALID [2020-07-08 12:44:47,625 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {37#true} {37#true} #81#return; {37#true} is VALID [2020-07-08 12:44:47,626 INFO L263 TraceCheckUtils]: 4: Hoare triple {37#true} call #t~ret8 := main(); {37#true} is VALID [2020-07-08 12:44:47,626 INFO L280 TraceCheckUtils]: 5: Hoare triple {37#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~N~0 := #t~nondet0;havoc #t~nondet0; {37#true} is VALID [2020-07-08 12:44:47,627 INFO L280 TraceCheckUtils]: 6: Hoare triple {37#true} assume !(~N~0 <= 0); {37#true} is VALID [2020-07-08 12:44:47,627 INFO L263 TraceCheckUtils]: 7: Hoare triple {37#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {37#true} is VALID [2020-07-08 12:44:47,628 INFO L280 TraceCheckUtils]: 8: Hoare triple {37#true} ~cond := #in~cond; {37#true} is VALID [2020-07-08 12:44:47,629 INFO L280 TraceCheckUtils]: 9: Hoare triple {37#true} assume 0 == ~cond;assume false; {38#false} is VALID [2020-07-08 12:44:47,629 INFO L280 TraceCheckUtils]: 10: Hoare triple {38#false} assume true; {38#false} is VALID [2020-07-08 12:44:47,630 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {38#false} {37#true} #77#return; {38#false} is VALID [2020-07-08 12:44:47,630 INFO L280 TraceCheckUtils]: 12: Hoare triple {38#false} havoc ~i~0;call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(4);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0);~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset;call write~int(0, ~#sum~0.base, ~#sum~0.offset, 4);~i~0 := 0; {38#false} is VALID [2020-07-08 12:44:47,631 INFO L280 TraceCheckUtils]: 13: Hoare triple {38#false} assume !(~i~0 < ~N~0); {38#false} is VALID [2020-07-08 12:44:47,631 INFO L280 TraceCheckUtils]: 14: Hoare triple {38#false} ~i~0 := 0; {38#false} is VALID [2020-07-08 12:44:47,631 INFO L280 TraceCheckUtils]: 15: Hoare triple {38#false} assume !(~i~0 < ~N~0); {38#false} is VALID [2020-07-08 12:44:47,632 INFO L280 TraceCheckUtils]: 16: Hoare triple {38#false} ~i~0 := 0; {38#false} is VALID [2020-07-08 12:44:47,632 INFO L280 TraceCheckUtils]: 17: Hoare triple {38#false} assume !!(~i~0 < ~N~0);call #t~mem7 := read~int(~a~0.base, ~a~0.offset + 4 * ~i~0, 4); {38#false} is VALID [2020-07-08 12:44:47,633 INFO L263 TraceCheckUtils]: 18: Hoare triple {38#false} call __VERIFIER_assert((if 1 == #t~mem7 then 1 else 0)); {38#false} is VALID [2020-07-08 12:44:47,633 INFO L280 TraceCheckUtils]: 19: Hoare triple {38#false} ~cond := #in~cond; {38#false} is VALID [2020-07-08 12:44:47,633 INFO L280 TraceCheckUtils]: 20: Hoare triple {38#false} assume 0 == ~cond; {38#false} is VALID [2020-07-08 12:44:47,634 INFO L280 TraceCheckUtils]: 21: Hoare triple {38#false} assume !false; {38#false} is VALID [2020-07-08 12:44:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:44:47,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467537484] [2020-07-08 12:44:47,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:44:47,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-08 12:44:47,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780430052] [2020-07-08 12:44:47,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-08 12:44:47,651 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:44:47,655 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-08 12:44:47,703 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:47,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-08 12:44:47,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:44:47,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-08 12:44:47,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-08 12:44:47,718 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-07-08 12:44:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:47,947 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-07-08 12:44:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-08 12:44:47,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-08 12:44:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:44:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-08 12:44:47,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2020-07-08 12:44:47,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-08 12:44:47,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2020-07-08 12:44:47,966 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 73 transitions. [2020-07-08 12:44:48,110 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 73 edges. 73 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:48,125 INFO L225 Difference]: With dead ends: 58 [2020-07-08 12:44:48,125 INFO L226 Difference]: Without dead ends: 29 [2020-07-08 12:44:48,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-08 12:44:48,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-08 12:44:48,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-08 12:44:48,188 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:44:48,189 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand 29 states. [2020-07-08 12:44:48,190 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand 29 states. [2020-07-08 12:44:48,190 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 29 states. [2020-07-08 12:44:48,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:48,195 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-07-08 12:44:48,195 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-08 12:44:48,196 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:48,196 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:48,196 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand 29 states. [2020-07-08 12:44:48,197 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 29 states. [2020-07-08 12:44:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:48,201 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-07-08 12:44:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-08 12:44:48,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:48,202 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:48,202 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:44:48,202 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:44:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-08 12:44:48,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-08 12:44:48,207 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-07-08 12:44:48,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:44:48,208 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-08 12:44:48,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-08 12:44:48,208 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-08 12:44:48,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-08 12:44:48,209 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:44:48,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:44:48,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 12:44:48,210 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:44:48,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:44:48,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-07-08 12:44:48,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:44:48,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271451078] [2020-07-08 12:44:48,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:44:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:48,377 INFO L280 TraceCheckUtils]: 0: Hoare triple {232#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {221#true} is VALID [2020-07-08 12:44:48,377 INFO L280 TraceCheckUtils]: 1: Hoare triple {221#true} assume true; {221#true} is VALID [2020-07-08 12:44:48,377 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {221#true} {221#true} #81#return; {221#true} is VALID [2020-07-08 12:44:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:48,389 INFO L280 TraceCheckUtils]: 0: Hoare triple {221#true} ~cond := #in~cond; {221#true} is VALID [2020-07-08 12:44:48,390 INFO L280 TraceCheckUtils]: 1: Hoare triple {221#true} assume !(0 == ~cond); {221#true} is VALID [2020-07-08 12:44:48,390 INFO L280 TraceCheckUtils]: 2: Hoare triple {221#true} assume true; {221#true} is VALID [2020-07-08 12:44:48,391 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {221#true} {226#(<= 1 ~N~0)} #77#return; {226#(<= 1 ~N~0)} is VALID [2020-07-08 12:44:48,393 INFO L263 TraceCheckUtils]: 0: Hoare triple {221#true} call ULTIMATE.init(); {232#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-08 12:44:48,393 INFO L280 TraceCheckUtils]: 1: Hoare triple {232#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {221#true} is VALID [2020-07-08 12:44:48,394 INFO L280 TraceCheckUtils]: 2: Hoare triple {221#true} assume true; {221#true} is VALID [2020-07-08 12:44:48,394 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {221#true} {221#true} #81#return; {221#true} is VALID [2020-07-08 12:44:48,394 INFO L263 TraceCheckUtils]: 4: Hoare triple {221#true} call #t~ret8 := main(); {221#true} is VALID [2020-07-08 12:44:48,395 INFO L280 TraceCheckUtils]: 5: Hoare triple {221#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~N~0 := #t~nondet0;havoc #t~nondet0; {221#true} is VALID [2020-07-08 12:44:48,396 INFO L280 TraceCheckUtils]: 6: Hoare triple {221#true} assume !(~N~0 <= 0); {226#(<= 1 ~N~0)} is VALID [2020-07-08 12:44:48,397 INFO L263 TraceCheckUtils]: 7: Hoare triple {226#(<= 1 ~N~0)} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {221#true} is VALID [2020-07-08 12:44:48,397 INFO L280 TraceCheckUtils]: 8: Hoare triple {221#true} ~cond := #in~cond; {221#true} is VALID [2020-07-08 12:44:48,398 INFO L280 TraceCheckUtils]: 9: Hoare triple {221#true} assume !(0 == ~cond); {221#true} is VALID [2020-07-08 12:44:48,398 INFO L280 TraceCheckUtils]: 10: Hoare triple {221#true} assume true; {221#true} is VALID [2020-07-08 12:44:48,399 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {221#true} {226#(<= 1 ~N~0)} #77#return; {226#(<= 1 ~N~0)} is VALID [2020-07-08 12:44:48,401 INFO L280 TraceCheckUtils]: 12: Hoare triple {226#(<= 1 ~N~0)} havoc ~i~0;call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(4);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0);~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset;call write~int(0, ~#sum~0.base, ~#sum~0.offset, 4);~i~0 := 0; {231#(and (= 0 main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-08 12:44:48,402 INFO L280 TraceCheckUtils]: 13: Hoare triple {231#(and (= 0 main_~i~0) (<= 1 ~N~0))} assume !(~i~0 < ~N~0); {222#false} is VALID [2020-07-08 12:44:48,403 INFO L280 TraceCheckUtils]: 14: Hoare triple {222#false} ~i~0 := 0; {222#false} is VALID [2020-07-08 12:44:48,403 INFO L280 TraceCheckUtils]: 15: Hoare triple {222#false} assume !(~i~0 < ~N~0); {222#false} is VALID [2020-07-08 12:44:48,404 INFO L280 TraceCheckUtils]: 16: Hoare triple {222#false} ~i~0 := 0; {222#false} is VALID [2020-07-08 12:44:48,404 INFO L280 TraceCheckUtils]: 17: Hoare triple {222#false} assume !!(~i~0 < ~N~0);call #t~mem7 := read~int(~a~0.base, ~a~0.offset + 4 * ~i~0, 4); {222#false} is VALID [2020-07-08 12:44:48,404 INFO L263 TraceCheckUtils]: 18: Hoare triple {222#false} call __VERIFIER_assert((if 1 == #t~mem7 then 1 else 0)); {222#false} is VALID [2020-07-08 12:44:48,405 INFO L280 TraceCheckUtils]: 19: Hoare triple {222#false} ~cond := #in~cond; {222#false} is VALID [2020-07-08 12:44:48,405 INFO L280 TraceCheckUtils]: 20: Hoare triple {222#false} assume 0 == ~cond; {222#false} is VALID [2020-07-08 12:44:48,405 INFO L280 TraceCheckUtils]: 21: Hoare triple {222#false} assume !false; {222#false} is VALID [2020-07-08 12:44:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:44:48,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271451078] [2020-07-08 12:44:48,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:44:48,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 12:44:48,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035791335] [2020-07-08 12:44:48,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-07-08 12:44:48,412 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:44:48,412 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-08 12:44:48,451 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:48,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-08 12:44:48,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:44:48,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-08 12:44:48,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-08 12:44:48,452 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2020-07-08 12:44:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:48,858 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-08 12:44:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-08 12:44:48,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-07-08 12:44:48,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:44:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 12:44:48,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2020-07-08 12:44:48,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 12:44:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2020-07-08 12:44:48,876 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 57 transitions. [2020-07-08 12:44:48,998 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:49,001 INFO L225 Difference]: With dead ends: 51 [2020-07-08 12:44:49,002 INFO L226 Difference]: Without dead ends: 37 [2020-07-08 12:44:49,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-08 12:44:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-08 12:44:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-07-08 12:44:49,040 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:44:49,040 INFO L82 GeneralOperation]: Start isEquivalent. First operand 37 states. Second operand 31 states. [2020-07-08 12:44:49,041 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand 31 states. [2020-07-08 12:44:49,041 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 31 states. [2020-07-08 12:44:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:49,047 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-07-08 12:44:49,047 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-07-08 12:44:49,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:49,048 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:49,048 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 37 states. [2020-07-08 12:44:49,049 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 37 states. [2020-07-08 12:44:49,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:49,053 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-07-08 12:44:49,053 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-07-08 12:44:49,055 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:49,055 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:49,056 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:44:49,056 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:44:49,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-08 12:44:49,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-07-08 12:44:49,060 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2020-07-08 12:44:49,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:44:49,061 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-07-08 12:44:49,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-08 12:44:49,061 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-07-08 12:44:49,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-08 12:44:49,062 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:44:49,062 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] [2020-07-08 12:44:49,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 12:44:49,063 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:44:49,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:44:49,064 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-07-08 12:44:49,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:44:49,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44555620] [2020-07-08 12:44:49,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:44:49,086 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-08 12:44:49,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79785521] [2020-07-08 12:44:49,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-08 12:44:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 12:44:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 12:44:49,229 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-08 12:44:49,230 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-08 12:44:49,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-08 12:44:49,501 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-08 12:44:49,501 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 12:44:49,501 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 12:44:49,501 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-08 12:44:49,501 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-08 12:44:49,501 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-08 12:44:49,502 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-08 12:44:49,502 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 12:44:49,502 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 12:44:49,502 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-08 12:44:49,502 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-08 12:44:49,502 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-08 12:44:49,503 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-08 12:44:49,503 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-08 12:44:49,503 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-08 12:44:49,503 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-08 12:44:49,503 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 12:44:49,503 WARN L170 areAnnotationChecker]: L11-2 has no Hoare annotation [2020-07-08 12:44:49,504 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-08 12:44:49,504 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-08 12:44:49,504 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-08 12:44:49,504 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-08 12:44:49,505 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-08 12:44:49,505 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-08 12:44:49,505 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2020-07-08 12:44:49,505 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-08 12:44:49,505 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2020-07-08 12:44:49,505 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-08 12:44:49,506 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-08 12:44:49,506 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-08 12:44:49,506 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-08 12:44:49,506 WARN L170 areAnnotationChecker]: L42-1 has no Hoare annotation [2020-07-08 12:44:49,506 WARN L170 areAnnotationChecker]: L30-4 has no Hoare annotation [2020-07-08 12:44:49,506 WARN L170 areAnnotationChecker]: L30-2 has no Hoare annotation [2020-07-08 12:44:49,506 WARN L170 areAnnotationChecker]: L40-2 has no Hoare annotation [2020-07-08 12:44:49,507 WARN L170 areAnnotationChecker]: L35-3 has no Hoare annotation [2020-07-08 12:44:49,507 WARN L170 areAnnotationChecker]: L35-3 has no Hoare annotation [2020-07-08 12:44:49,507 WARN L170 areAnnotationChecker]: L35-3 has no Hoare annotation [2020-07-08 12:44:49,507 WARN L170 areAnnotationChecker]: L40-3 has no Hoare annotation [2020-07-08 12:44:49,507 WARN L170 areAnnotationChecker]: L40-3 has no Hoare annotation [2020-07-08 12:44:49,507 WARN L170 areAnnotationChecker]: L40-3 has no Hoare annotation [2020-07-08 12:44:49,507 WARN L170 areAnnotationChecker]: L35-4 has no Hoare annotation [2020-07-08 12:44:49,508 WARN L170 areAnnotationChecker]: L35-2 has no Hoare annotation [2020-07-08 12:44:49,508 WARN L170 areAnnotationChecker]: L40-4 has no Hoare annotation [2020-07-08 12:44:49,508 WARN L170 areAnnotationChecker]: L42 has no Hoare annotation [2020-07-08 12:44:49,508 WARN L170 areAnnotationChecker]: L42 has no Hoare annotation [2020-07-08 12:44:49,508 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. [2020-07-08 12:44:49,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 12:44:49 BoogieIcfgContainer [2020-07-08 12:44:49,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 12:44:49,515 INFO L168 Benchmark]: Toolchain (without parser) took 3280.55 ms. Allocated memory was 147.8 MB in the beginning and 232.8 MB in the end (delta: 84.9 MB). Free memory was 104.3 MB in the beginning and 93.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 96.1 MB. Max. memory is 7.1 GB. [2020-07-08 12:44:49,516 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-08 12:44:49,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.32 ms. Allocated memory is still 147.8 MB. Free memory was 104.1 MB in the beginning and 92.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-07-08 12:44:49,518 INFO L168 Benchmark]: Boogie Preprocessor took 146.85 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 92.8 MB in the beginning and 181.7 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-08 12:44:49,519 INFO L168 Benchmark]: RCFGBuilder took 501.22 ms. Allocated memory is still 204.5 MB. Free memory was 181.7 MB in the beginning and 157.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-08 12:44:49,520 INFO L168 Benchmark]: TraceAbstraction took 2261.52 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 156.7 MB in the beginning and 93.1 MB in the end (delta: 63.6 MB). Peak memory consumption was 91.9 MB. Max. memory is 7.1 GB. [2020-07-08 12:44:49,524 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 364.32 ms. Allocated memory is still 147.8 MB. Free memory was 104.1 MB in the beginning and 92.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.85 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 92.8 MB in the beginning and 181.7 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 501.22 ms. Allocated memory is still 204.5 MB. Free memory was 181.7 MB in the beginning and 157.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2261.52 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 156.7 MB in the beginning and 93.1 MB in the end (delta: 63.6 MB). Peak memory consumption was 91.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=5, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={1:0}, i=0, malloc(sizeof(int)*N)={1:0}, N=1, sum={3:0}] [L30] COND TRUE i