/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/sqm-iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:49:59,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:49:59,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:49:59,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:49:59,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:49:59,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:49:59,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:49:59,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:49:59,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:49:59,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:49:59,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:49:59,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:49:59,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:49:59,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:49:59,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:49:59,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:49:59,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:49:59,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:49:59,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:49:59,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:49:59,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:49:59,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:49:59,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:49:59,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:49:59,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:49:59,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 22:49:59,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 22:49:59,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 22:49:59,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 22:49:59,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 22:49:59,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 22:49:59,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 22:49:59,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 22:49:59,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:49:59,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:49:59,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:49:59,345 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 22:49:59,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:49:59,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:49:59,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:49:59,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:49:59,373 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:49:59,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:49:59,373 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:49:59,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:49:59,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:49:59,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:49:59,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:49:59,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:49:59,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:49:59,375 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:49:59,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:49:59,375 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:49:59,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:49:59,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:49:59,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:49:59,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:49:59,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:49:59,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:49:59,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:49:59,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:49:59,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:49:59,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:49:59,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:49:59,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:49:59,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:49:59,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:49:59,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:49:59,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:49:59,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:49:59,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:49:59,741 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:49:59,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqm-iff.c [2020-07-17 22:49:59,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/798377345/f1298c260b6f4084a129eecee07c990a/FLAG33ea37af0 [2020-07-17 22:50:00,354 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:50:00,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqm-iff.c [2020-07-17 22:50:00,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/798377345/f1298c260b6f4084a129eecee07c990a/FLAG33ea37af0 [2020-07-17 22:50:00,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/798377345/f1298c260b6f4084a129eecee07c990a [2020-07-17 22:50:00,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:50:00,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:50:00,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:00,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:50:00,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:50:00,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:00" (1/1) ... [2020-07-17 22:50:00,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e15001a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:00, skipping insertion in model container [2020-07-17 22:50:00,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:00" (1/1) ... [2020-07-17 22:50:00,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:50:00,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:50:00,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:00,983 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:50:01,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:01,035 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:50:01,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:01 WrapperNode [2020-07-17 22:50:01,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:01,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:50:01,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:50:01,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:50:01,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:01" (1/1) ... [2020-07-17 22:50:01,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:01" (1/1) ... [2020-07-17 22:50:01,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:01" (1/1) ... [2020-07-17 22:50:01,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:01" (1/1) ... [2020-07-17 22:50:01,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:01" (1/1) ... [2020-07-17 22:50:01,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:01" (1/1) ... [2020-07-17 22:50:01,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:01" (1/1) ... [2020-07-17 22:50:01,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:50:01,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:50:01,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:50:01,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:50:01,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:01" (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 22:50:01,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:50:01,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:50:01,262 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 22:50:01,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:50:01,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:50:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:50:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 22:50:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 22:50:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:50:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:50:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 22:50:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:50:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 22:50:01,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:50:01,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:50:01,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:50:01,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:50:01,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:50:01,830 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:50:01,831 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-17 22:50:01,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:01 BoogieIcfgContainer [2020-07-17 22:50:01,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:50:01,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:50:01,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:50:01,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:50:01,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:50:00" (1/3) ... [2020-07-17 22:50:01,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69624fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:01, skipping insertion in model container [2020-07-17 22:50:01,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:01" (2/3) ... [2020-07-17 22:50:01,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69624fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:01, skipping insertion in model container [2020-07-17 22:50:01,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:01" (3/3) ... [2020-07-17 22:50:01,846 INFO L109 eAbstractionObserver]: Analyzing ICFG sqm-iff.c [2020-07-17 22:50:01,857 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:50:01,867 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:50:01,883 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:50:01,910 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:50:01,910 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:50:01,911 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:50:01,911 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:50:01,911 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:50:01,911 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:50:01,911 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:50:01,912 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:50:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-17 22:50:01,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 22:50:01,940 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:01,942 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] [2020-07-17 22:50:01,942 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:01,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:01,948 INFO L82 PathProgramCache]: Analyzing trace with hash -294712258, now seen corresponding path program 1 times [2020-07-17 22:50:01,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:01,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488334478] [2020-07-17 22:50:01,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:02,209 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#(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; {39#true} is VALID [2020-07-17 22:50:02,210 INFO L280 TraceCheckUtils]: 1: Hoare triple {39#true} assume true; {39#true} is VALID [2020-07-17 22:50:02,211 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {39#true} {39#true} #91#return; {39#true} is VALID [2020-07-17 22:50:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:02,224 INFO L280 TraceCheckUtils]: 0: Hoare triple {39#true} ~cond := #in~cond; {39#true} is VALID [2020-07-17 22:50:02,226 INFO L280 TraceCheckUtils]: 1: Hoare triple {39#true} assume 0 == ~cond;assume false; {40#false} is VALID [2020-07-17 22:50:02,226 INFO L280 TraceCheckUtils]: 2: Hoare triple {40#false} assume true; {40#false} is VALID [2020-07-17 22:50:02,227 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {40#false} {39#true} #87#return; {40#false} is VALID [2020-07-17 22:50:02,231 INFO L263 TraceCheckUtils]: 0: Hoare triple {39#true} call ULTIMATE.init(); {48#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:50:02,232 INFO L280 TraceCheckUtils]: 1: Hoare triple {48#(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; {39#true} is VALID [2020-07-17 22:50:02,232 INFO L280 TraceCheckUtils]: 2: Hoare triple {39#true} assume true; {39#true} is VALID [2020-07-17 22:50:02,233 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {39#true} {39#true} #91#return; {39#true} is VALID [2020-07-17 22:50:02,234 INFO L263 TraceCheckUtils]: 4: Hoare triple {39#true} call #t~ret10 := main(); {39#true} is VALID [2020-07-17 22:50:02,234 INFO L280 TraceCheckUtils]: 5: Hoare triple {39#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~N~0 := #t~nondet0;havoc #t~nondet0; {39#true} is VALID [2020-07-17 22:50:02,235 INFO L280 TraceCheckUtils]: 6: Hoare triple {39#true} assume !(~N~0 <= 0); {39#true} is VALID [2020-07-17 22:50:02,236 INFO L263 TraceCheckUtils]: 7: Hoare triple {39#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {39#true} is VALID [2020-07-17 22:50:02,236 INFO L280 TraceCheckUtils]: 8: Hoare triple {39#true} ~cond := #in~cond; {39#true} is VALID [2020-07-17 22:50:02,237 INFO L280 TraceCheckUtils]: 9: Hoare triple {39#true} assume 0 == ~cond;assume false; {40#false} is VALID [2020-07-17 22:50:02,238 INFO L280 TraceCheckUtils]: 10: Hoare triple {40#false} assume true; {40#false} is VALID [2020-07-17 22:50:02,239 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {40#false} {39#true} #87#return; {40#false} is VALID [2020-07-17 22:50:02,240 INFO L280 TraceCheckUtils]: 12: Hoare triple {40#false} havoc ~i~0;call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(8 * ~N~0);~b~0.base, ~b~0.offset := #t~malloc2.base, #t~malloc2.offset;~i~0 := 0; {40#false} is VALID [2020-07-17 22:50:02,240 INFO L280 TraceCheckUtils]: 13: Hoare triple {40#false} assume !(~i~0 < ~N~0); {40#false} is VALID [2020-07-17 22:50:02,241 INFO L280 TraceCheckUtils]: 14: Hoare triple {40#false} ~i~0 := 0; {40#false} is VALID [2020-07-17 22:50:02,241 INFO L280 TraceCheckUtils]: 15: Hoare triple {40#false} assume !true; {40#false} is VALID [2020-07-17 22:50:02,242 INFO L280 TraceCheckUtils]: 16: Hoare triple {40#false} ~i~0 := 0; {40#false} is VALID [2020-07-17 22:50:02,242 INFO L280 TraceCheckUtils]: 17: Hoare triple {40#false} assume !!(~i~0 < ~N~0);call #t~mem9 := read~int(~a~0.base, ~a~0.offset + 8 * ~i~0, 8); {40#false} is VALID [2020-07-17 22:50:02,243 INFO L263 TraceCheckUtils]: 18: Hoare triple {40#false} call __VERIFIER_assert((if #t~mem9 == ~i~0 * ~i~0 then 1 else 0)); {40#false} is VALID [2020-07-17 22:50:02,243 INFO L280 TraceCheckUtils]: 19: Hoare triple {40#false} ~cond := #in~cond; {40#false} is VALID [2020-07-17 22:50:02,244 INFO L280 TraceCheckUtils]: 20: Hoare triple {40#false} assume 0 == ~cond; {40#false} is VALID [2020-07-17 22:50:02,244 INFO L280 TraceCheckUtils]: 21: Hoare triple {40#false} assume !false; {40#false} is VALID [2020-07-17 22:50:02,248 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 22:50:02,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488334478] [2020-07-17 22:50:02,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:50:02,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 22:50:02,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652899587] [2020-07-17 22:50:02,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-17 22:50:02,273 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:50:02,278 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-17 22:50:02,334 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:02,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 22:50:02,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:50:02,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 22:50:02,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 22:50:02,351 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-07-17 22:50:02,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:02,642 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-07-17 22:50:02,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 22:50:02,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-17 22:50:02,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:50:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-17 22:50:02,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2020-07-17 22:50:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-17 22:50:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2020-07-17 22:50:02,666 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 81 transitions. [2020-07-17 22:50:02,819 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 81 edges. 81 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:02,834 INFO L225 Difference]: With dead ends: 62 [2020-07-17 22:50:02,835 INFO L226 Difference]: Without dead ends: 31 [2020-07-17 22:50:02,860 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 [2020-07-17 22:50:02,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-17 22:50:02,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-17 22:50:02,937 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:50:02,938 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand 31 states. [2020-07-17 22:50:02,938 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 31 states. [2020-07-17 22:50:02,939 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 31 states. [2020-07-17 22:50:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:02,943 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-17 22:50:02,944 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-17 22:50:02,944 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:02,945 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:02,945 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 31 states. [2020-07-17 22:50:02,945 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 31 states. [2020-07-17 22:50:02,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:02,950 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-17 22:50:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-17 22:50:02,951 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:02,951 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:02,951 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:50:02,951 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:50:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-17 22:50:02,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-07-17 22:50:02,957 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-07-17 22:50:02,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:50:02,957 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-07-17 22:50:02,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 22:50:02,958 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-17 22:50:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 22:50:02,959 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:02,959 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] [2020-07-17 22:50:02,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:50:02,960 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:02,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:02,961 INFO L82 PathProgramCache]: Analyzing trace with hash -2054124171, now seen corresponding path program 1 times [2020-07-17 22:50:02,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:02,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537251161] [2020-07-17 22:50:02,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:02,998 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 22:50:02,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855619796] [2020-07-17 22:50:02,999 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 [2020-07-17 22:50:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:03,091 INFO L264 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-17 22:50:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:03,110 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 22:50:03,209 INFO L263 TraceCheckUtils]: 0: Hoare triple {233#true} call ULTIMATE.init(); {233#true} is VALID [2020-07-17 22:50:03,210 INFO L280 TraceCheckUtils]: 1: Hoare triple {233#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {233#true} is VALID [2020-07-17 22:50:03,210 INFO L280 TraceCheckUtils]: 2: Hoare triple {233#true} assume true; {233#true} is VALID [2020-07-17 22:50:03,210 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {233#true} {233#true} #91#return; {233#true} is VALID [2020-07-17 22:50:03,211 INFO L263 TraceCheckUtils]: 4: Hoare triple {233#true} call #t~ret10 := main(); {233#true} is VALID [2020-07-17 22:50:03,211 INFO L280 TraceCheckUtils]: 5: Hoare triple {233#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~N~0 := #t~nondet0;havoc #t~nondet0; {233#true} is VALID [2020-07-17 22:50:03,212 INFO L280 TraceCheckUtils]: 6: Hoare triple {233#true} assume !(~N~0 <= 0); {256#(< 0 ~N~0)} is VALID [2020-07-17 22:50:03,213 INFO L263 TraceCheckUtils]: 7: Hoare triple {256#(< 0 ~N~0)} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {256#(< 0 ~N~0)} is VALID [2020-07-17 22:50:03,214 INFO L280 TraceCheckUtils]: 8: Hoare triple {256#(< 0 ~N~0)} ~cond := #in~cond; {256#(< 0 ~N~0)} is VALID [2020-07-17 22:50:03,216 INFO L280 TraceCheckUtils]: 9: Hoare triple {256#(< 0 ~N~0)} assume !(0 == ~cond); {256#(< 0 ~N~0)} is VALID [2020-07-17 22:50:03,217 INFO L280 TraceCheckUtils]: 10: Hoare triple {256#(< 0 ~N~0)} assume true; {256#(< 0 ~N~0)} is VALID [2020-07-17 22:50:03,218 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {256#(< 0 ~N~0)} {256#(< 0 ~N~0)} #87#return; {256#(< 0 ~N~0)} is VALID [2020-07-17 22:50:03,221 INFO L280 TraceCheckUtils]: 12: Hoare triple {256#(< 0 ~N~0)} havoc ~i~0;call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(8 * ~N~0);~b~0.base, ~b~0.offset := #t~malloc2.base, #t~malloc2.offset;~i~0 := 0; {275#(and (<= main_~i~0 0) (< 0 ~N~0))} is VALID [2020-07-17 22:50:03,222 INFO L280 TraceCheckUtils]: 13: Hoare triple {275#(and (<= main_~i~0 0) (< 0 ~N~0))} assume !(~i~0 < ~N~0); {234#false} is VALID [2020-07-17 22:50:03,222 INFO L280 TraceCheckUtils]: 14: Hoare triple {234#false} ~i~0 := 0; {234#false} is VALID [2020-07-17 22:50:03,223 INFO L280 TraceCheckUtils]: 15: Hoare triple {234#false} assume !(~i~0 < ~N~0); {234#false} is VALID [2020-07-17 22:50:03,223 INFO L280 TraceCheckUtils]: 16: Hoare triple {234#false} ~i~0 := 0; {234#false} is VALID [2020-07-17 22:50:03,223 INFO L280 TraceCheckUtils]: 17: Hoare triple {234#false} assume !!(~i~0 < ~N~0);call #t~mem9 := read~int(~a~0.base, ~a~0.offset + 8 * ~i~0, 8); {234#false} is VALID [2020-07-17 22:50:03,224 INFO L263 TraceCheckUtils]: 18: Hoare triple {234#false} call __VERIFIER_assert((if #t~mem9 == ~i~0 * ~i~0 then 1 else 0)); {234#false} is VALID [2020-07-17 22:50:03,224 INFO L280 TraceCheckUtils]: 19: Hoare triple {234#false} ~cond := #in~cond; {234#false} is VALID [2020-07-17 22:50:03,224 INFO L280 TraceCheckUtils]: 20: Hoare triple {234#false} assume 0 == ~cond; {234#false} is VALID [2020-07-17 22:50:03,225 INFO L280 TraceCheckUtils]: 21: Hoare triple {234#false} assume !false; {234#false} is VALID [2020-07-17 22:50:03,228 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 22:50:03,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537251161] [2020-07-17 22:50:03,229 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-17 22:50:03,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855619796] [2020-07-17 22:50:03,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:50:03,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 22:50:03,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285845477] [2020-07-17 22:50:03,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-17 22:50:03,233 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:50:03,233 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-17 22:50:03,267 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:03,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 22:50:03,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:50:03,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 22:50:03,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-17 22:50:03,269 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-07-17 22:50:03,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:03,502 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-07-17 22:50:03,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 22:50:03,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-17 22:50:03,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:50:03,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:50:03,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2020-07-17 22:50:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:50:03,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2020-07-17 22:50:03,511 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 67 transitions. [2020-07-17 22:50:03,622 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 67 edges. 67 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:03,625 INFO L225 Difference]: With dead ends: 56 [2020-07-17 22:50:03,625 INFO L226 Difference]: Without dead ends: 41 [2020-07-17 22:50:03,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-17 22:50:03,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-17 22:50:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2020-07-17 22:50:03,666 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:50:03,666 INFO L82 GeneralOperation]: Start isEquivalent. First operand 41 states. Second operand 33 states. [2020-07-17 22:50:03,667 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand 33 states. [2020-07-17 22:50:03,667 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 33 states. [2020-07-17 22:50:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:03,673 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-07-17 22:50:03,673 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-07-17 22:50:03,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:03,674 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:03,675 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand 41 states. [2020-07-17 22:50:03,675 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 41 states. [2020-07-17 22:50:03,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:03,679 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-07-17 22:50:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-07-17 22:50:03,680 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:03,681 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:03,681 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:50:03,681 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:50:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-17 22:50:03,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-07-17 22:50:03,684 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2020-07-17 22:50:03,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:50:03,685 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-07-17 22:50:03,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 22:50:03,685 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-07-17 22:50:03,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-17 22:50:03,686 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:03,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:03,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 22:50:03,903 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:03,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:03,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1477618916, now seen corresponding path program 1 times [2020-07-17 22:50:03,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:03,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654889927] [2020-07-17 22:50:03,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:03,957 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 22:50:03,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866147124] [2020-07-17 22:50:03,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 22:50:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:50:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:50:04,049 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:50:04,049 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:50:04,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 22:50:04,333 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-17 22:50:04,333 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:50:04,333 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:50:04,334 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-17 22:50:04,334 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:50:04,334 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-17 22:50:04,334 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:50:04,334 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:50:04,335 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:50:04,335 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-17 22:50:04,335 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-17 22:50:04,335 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-17 22:50:04,336 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-17 22:50:04,336 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-17 22:50:04,336 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-17 22:50:04,340 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:50:04,341 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:50:04,341 WARN L170 areAnnotationChecker]: L11-2 has no Hoare annotation [2020-07-17 22:50:04,341 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:50:04,341 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-17 22:50:04,341 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-17 22:50:04,342 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-17 22:50:04,342 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-17 22:50:04,342 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-17 22:50:04,342 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2020-07-17 22:50:04,342 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:50:04,343 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2020-07-17 22:50:04,343 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:50:04,343 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-17 22:50:04,346 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-17 22:50:04,347 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-17 22:50:04,347 WARN L170 areAnnotationChecker]: L49-1 has no Hoare annotation [2020-07-17 22:50:04,347 WARN L170 areAnnotationChecker]: L29-4 has no Hoare annotation [2020-07-17 22:50:04,347 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-17 22:50:04,348 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-17 22:50:04,348 WARN L170 areAnnotationChecker]: L47-2 has no Hoare annotation [2020-07-17 22:50:04,348 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-17 22:50:04,351 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-17 22:50:04,352 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-17 22:50:04,352 WARN L170 areAnnotationChecker]: L29-2 has no Hoare annotation [2020-07-17 22:50:04,352 WARN L170 areAnnotationChecker]: L47-3 has no Hoare annotation [2020-07-17 22:50:04,352 WARN L170 areAnnotationChecker]: L47-3 has no Hoare annotation [2020-07-17 22:50:04,353 WARN L170 areAnnotationChecker]: L47-3 has no Hoare annotation [2020-07-17 22:50:04,353 WARN L170 areAnnotationChecker]: L38-4 has no Hoare annotation [2020-07-17 22:50:04,353 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-17 22:50:04,353 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-17 22:50:04,353 WARN L170 areAnnotationChecker]: L47-4 has no Hoare annotation [2020-07-17 22:50:04,353 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-17 22:50:04,354 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-17 22:50:04,354 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2020-07-17 22:50:04,354 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 22:50:04,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:50:04 BoogieIcfgContainer [2020-07-17 22:50:04,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:50:04,368 INFO L168 Benchmark]: Toolchain (without parser) took 3661.93 ms. Allocated memory was 136.8 MB in the beginning and 231.7 MB in the end (delta: 94.9 MB). Free memory was 100.2 MB in the beginning and 98.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 96.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:04,369 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 22:50:04,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.33 ms. Allocated memory is still 136.8 MB. Free memory was 99.8 MB in the beginning and 88.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:04,371 INFO L168 Benchmark]: Boogie Preprocessor took 148.70 ms. Allocated memory was 136.8 MB in the beginning and 202.4 MB in the end (delta: 65.5 MB). Free memory was 88.9 MB in the beginning and 179.8 MB in the end (delta: -90.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:04,372 INFO L168 Benchmark]: RCFGBuilder took 650.14 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 154.3 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:04,373 INFO L168 Benchmark]: TraceAbstraction took 2524.16 ms. Allocated memory was 202.4 MB in the beginning and 231.7 MB in the end (delta: 29.4 MB). Free memory was 154.3 MB in the beginning and 98.7 MB in the end (delta: 55.6 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:04,378 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 0.31 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.33 ms. Allocated memory is still 136.8 MB. Free memory was 99.8 MB in the beginning and 88.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 148.70 ms. Allocated memory was 136.8 MB in the beginning and 202.4 MB in the end (delta: 65.5 MB). Free memory was 88.9 MB in the beginning and 179.8 MB in the end (delta: -90.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 650.14 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 154.3 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2524.16 ms. Allocated memory was 202.4 MB in the beginning and 231.7 MB in the end (delta: 29.4 MB). Free memory was 154.3 MB in the beginning and 98.7 MB in the end (delta: 55.6 MB). Peak memory consumption was 85.0 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)=2, 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] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] i=0 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=0, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-1:0}, N=1] [L29] COND TRUE i