java -ea -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-370d6ab [2018-11-14 17:35:51,108 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-14 17:35:51,119 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-14 17:35:51,135 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-14 17:35:51,136 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-14 17:35:51,138 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-14 17:35:51,139 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-14 17:35:51,141 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-14 17:35:51,143 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-14 17:35:51,144 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-14 17:35:51,144 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-14 17:35:51,145 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-14 17:35:51,146 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-14 17:35:51,147 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-14 17:35:51,148 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-14 17:35:51,149 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-14 17:35:51,150 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-14 17:35:51,151 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-14 17:35:51,154 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-14 17:35:51,159 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-14 17:35:51,160 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-14 17:35:51,161 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-14 17:35:51,167 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-14 17:35:51,185 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-14 17:35:51,210 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-14 17:35:51,211 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-14 17:35:51,211 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-14 17:35:51,212 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-14 17:35:51,212 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-14 17:35:51,213 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-14 17:35:51,214 INFO L133 SettingsManager]: * Use SBE=true [2018-11-14 17:35:51,215 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-14 17:35:51,215 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-14 17:35:51,215 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-14 17:35:51,215 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-14 17:35:51,215 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-14 17:35:51,215 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-14 17:35:51,216 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-14 17:35:51,216 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-14 17:35:51,216 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-14 17:35:51,217 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-14 17:35:51,217 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-14 17:35:51,217 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-14 17:35:51,217 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-14 17:35:51,217 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-14 17:35:51,219 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-14 17:35:51,219 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-14 17:35:51,220 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-14 17:35:51,220 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-14 17:35:51,220 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-14 17:35:51,220 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-14 17:35:51,220 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-14 17:35:51,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-14 17:35:51,221 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-14 17:35:51,285 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-14 17:35:51,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-14 17:35:51,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-14 17:35:51,311 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-14 17:35:51,311 INFO L276 PluginConnector]: CDTParser initialized [2018-11-14 17:35:51,312 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-11-14 17:35:51,380 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8b2b48a0/d10e71c224cd4d2786c953e17ade02e4/FLAG7bc802eb0 [2018-11-14 17:35:51,860 INFO L298 CDTParser]: Found 1 translation units. [2018-11-14 17:35:51,861 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-11-14 17:35:51,877 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8b2b48a0/d10e71c224cd4d2786c953e17ade02e4/FLAG7bc802eb0 [2018-11-14 17:35:51,901 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8b2b48a0/d10e71c224cd4d2786c953e17ade02e4 [2018-11-14 17:35:51,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-14 17:35:51,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-14 17:35:51,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-14 17:35:51,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-14 17:35:51,924 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-14 17:35:51,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:35:51" (1/1) ... [2018-11-14 17:35:51,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7724b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:35:51, skipping insertion in model container [2018-11-14 17:35:51,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:35:51" (1/1) ... [2018-11-14 17:35:51,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-14 17:35:51,967 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-14 17:35:52,245 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 17:35:52,252 INFO L191 MainTranslator]: Completed pre-run [2018-11-14 17:35:52,279 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 17:35:52,296 INFO L195 MainTranslator]: Completed translation [2018-11-14 17:35:52,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:35:52 WrapperNode [2018-11-14 17:35:52,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-14 17:35:52,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-14 17:35:52,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-14 17:35:52,298 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-14 17:35:52,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:35:52" (1/1) ... [2018-11-14 17:35:52,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:35:52" (1/1) ... [2018-11-14 17:35:52,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:35:52" (1/1) ... [2018-11-14 17:35:52,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:35:52" (1/1) ... [2018-11-14 17:35:52,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:35:52" (1/1) ... [2018-11-14 17:35:52,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:35:52" (1/1) ... [2018-11-14 17:35:52,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:35:52" (1/1) ... [2018-11-14 17:35:52,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-14 17:35:52,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-14 17:35:52,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-14 17:35:52,327 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-14 17:35:52,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:35:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-14 17:35:52,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-14 17:35:52,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-14 17:35:52,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-14 17:35:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-14 17:35:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-14 17:35:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-14 17:35:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-14 17:35:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-14 17:35:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-14 17:35:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-14 17:35:52,937 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-14 17:35:52,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:35:52 BoogieIcfgContainer [2018-11-14 17:35:52,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-14 17:35:52,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-14 17:35:52,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-14 17:35:52,943 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-14 17:35:52,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:35:51" (1/3) ... [2018-11-14 17:35:52,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c89560f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:35:52, skipping insertion in model container [2018-11-14 17:35:52,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:35:52" (2/3) ... [2018-11-14 17:35:52,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c89560f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:35:52, skipping insertion in model container [2018-11-14 17:35:52,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:35:52" (3/3) ... [2018-11-14 17:35:52,946 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-11-14 17:35:52,958 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-14 17:35:52,966 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-14 17:35:52,980 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-14 17:35:53,012 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-14 17:35:53,013 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-14 17:35:53,013 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-14 17:35:53,013 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-14 17:35:53,013 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-14 17:35:53,013 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-14 17:35:53,013 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-14 17:35:53,014 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-14 17:35:53,014 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-14 17:35:53,032 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-11-14 17:35:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-14 17:35:53,038 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:35:53,039 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:35:53,042 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:35:53,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:35:53,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1277702393, now seen corresponding path program 1 times [2018-11-14 17:35:53,051 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:35:53,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:35:53,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:53,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:35:53,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:53,142 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:35:53,142 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:35:53,142 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-14 17:35:53,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:35:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:35:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:35:53,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:35:53,389 INFO L256 TraceCheckUtils]: 0: Hoare triple {19#true} call ULTIMATE.init(); {19#true} is VALID [2018-11-14 17:35:53,392 INFO L273 TraceCheckUtils]: 1: Hoare triple {19#true} ~__return_main~0 := 0;~__return_60~0 := 0; {19#true} is VALID [2018-11-14 17:35:53,393 INFO L273 TraceCheckUtils]: 2: Hoare triple {19#true} assume true; {19#true} is VALID [2018-11-14 17:35:53,393 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {19#true} {19#true} #28#return; {19#true} is VALID [2018-11-14 17:35:53,394 INFO L256 TraceCheckUtils]: 4: Hoare triple {19#true} call #t~ret2 := main(); {19#true} is VALID [2018-11-14 17:35:53,394 INFO L273 TraceCheckUtils]: 5: Hoare triple {19#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {19#true} is VALID [2018-11-14 17:35:53,396 INFO L273 TraceCheckUtils]: 6: Hoare triple {19#true} assume !!(1 <= ~main__n~0); {42#(<= 1 main_~main__n~0)} is VALID [2018-11-14 17:35:53,398 INFO L273 TraceCheckUtils]: 7: Hoare triple {42#(<= 1 main_~main__n~0)} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {46#(and (<= main_~main__i~0 1) (<= 1 main_~main__n~0))} is VALID [2018-11-14 17:35:53,410 INFO L273 TraceCheckUtils]: 8: Hoare triple {46#(and (<= main_~main__i~0 1) (<= 1 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {20#false} is VALID [2018-11-14 17:35:53,411 INFO L273 TraceCheckUtils]: 9: Hoare triple {20#false} assume ~__VERIFIER_assert__cond~0 == 0; {20#false} is VALID [2018-11-14 17:35:53,411 INFO L273 TraceCheckUtils]: 10: Hoare triple {20#false} assume !false; {20#false} is VALID [2018-11-14 17:35:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:35:53,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-14 17:35:53,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-14 17:35:53,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-14 17:35:53,458 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:35:53,462 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2018-11-14 17:35:53,593 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:53,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-14 17:35:53,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-14 17:35:53,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-14 17:35:53,616 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2018-11-14 17:35:53,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:53,909 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-11-14 17:35:53,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-14 17:35:53,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-14 17:35:53,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:35:53,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-14 17:35:53,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2018-11-14 17:35:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-14 17:35:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2018-11-14 17:35:53,928 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 30 transitions. [2018-11-14 17:35:53,990 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:54,002 INFO L225 Difference]: With dead ends: 26 [2018-11-14 17:35:54,002 INFO L226 Difference]: Without dead ends: 13 [2018-11-14 17:35:54,006 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-14 17:35:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-14 17:35:54,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-14 17:35:54,056 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:35:54,056 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand 13 states. [2018-11-14 17:35:54,057 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2018-11-14 17:35:54,057 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2018-11-14 17:35:54,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:54,060 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-11-14 17:35:54,060 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-14 17:35:54,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:54,061 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:54,061 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2018-11-14 17:35:54,062 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2018-11-14 17:35:54,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:54,065 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-11-14 17:35:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-14 17:35:54,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:54,066 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:54,066 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:35:54,066 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:35:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-14 17:35:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-14 17:35:54,070 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-11-14 17:35:54,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:35:54,071 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-14 17:35:54,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-14 17:35:54,071 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-14 17:35:54,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-14 17:35:54,072 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:35:54,072 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:35:54,072 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:35:54,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:35:54,073 INFO L82 PathProgramCache]: Analyzing trace with hash -954130992, now seen corresponding path program 1 times [2018-11-14 17:35:54,073 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:35:54,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:35:54,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:54,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:35:54,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:54,085 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:35:54,085 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:35:54,086 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-14 17:35:54,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:35:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:35:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:35:54,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:35:54,419 INFO L256 TraceCheckUtils]: 0: Hoare triple {132#true} call ULTIMATE.init(); {132#true} is VALID [2018-11-14 17:35:54,420 INFO L273 TraceCheckUtils]: 1: Hoare triple {132#true} ~__return_main~0 := 0;~__return_60~0 := 0; {132#true} is VALID [2018-11-14 17:35:54,420 INFO L273 TraceCheckUtils]: 2: Hoare triple {132#true} assume true; {132#true} is VALID [2018-11-14 17:35:54,420 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {132#true} {132#true} #28#return; {132#true} is VALID [2018-11-14 17:35:54,421 INFO L256 TraceCheckUtils]: 4: Hoare triple {132#true} call #t~ret2 := main(); {132#true} is VALID [2018-11-14 17:35:54,421 INFO L273 TraceCheckUtils]: 5: Hoare triple {132#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {132#true} is VALID [2018-11-14 17:35:54,423 INFO L273 TraceCheckUtils]: 6: Hoare triple {132#true} assume !!(1 <= ~main__n~0); {155#(<= 1 main_~main__n~0)} is VALID [2018-11-14 17:35:54,424 INFO L273 TraceCheckUtils]: 7: Hoare triple {155#(<= 1 main_~main__n~0)} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {159#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0) (<= 1 main_~main__n~0))} is VALID [2018-11-14 17:35:54,427 INFO L273 TraceCheckUtils]: 8: Hoare triple {159#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0) (<= 1 main_~main__n~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {163#(and (= main_~main__sum~0 1) (<= main_~main__i~0 2) (<= 1 main_~main__n~0))} is VALID [2018-11-14 17:35:54,428 INFO L273 TraceCheckUtils]: 9: Hoare triple {163#(and (= main_~main__sum~0 1) (<= main_~main__i~0 2) (<= 1 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {167#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:35:54,429 INFO L273 TraceCheckUtils]: 10: Hoare triple {167#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {133#false} is VALID [2018-11-14 17:35:54,430 INFO L273 TraceCheckUtils]: 11: Hoare triple {133#false} assume !false; {133#false} is VALID [2018-11-14 17:35:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:35:54,451 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:35:54,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-11-14 17:35:54,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-11-14 17:35:54,454 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:35:54,454 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2018-11-14 17:35:54,489 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:54,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-14 17:35:54,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-14 17:35:54,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-14 17:35:54,490 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2018-11-14 17:35:55,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:55,114 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-11-14 17:35:55,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-14 17:35:55,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-11-14 17:35:55,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:35:55,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-14 17:35:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2018-11-14 17:35:55,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-14 17:35:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2018-11-14 17:35:55,121 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 17 transitions. [2018-11-14 17:35:55,181 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:55,182 INFO L225 Difference]: With dead ends: 17 [2018-11-14 17:35:55,182 INFO L226 Difference]: Without dead ends: 14 [2018-11-14 17:35:55,183 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-14 17:35:55,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-14 17:35:55,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-14 17:35:55,205 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:35:55,205 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand 14 states. [2018-11-14 17:35:55,206 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2018-11-14 17:35:55,206 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2018-11-14 17:35:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:55,210 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-11-14 17:35:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-14 17:35:55,210 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:55,210 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:55,210 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2018-11-14 17:35:55,211 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2018-11-14 17:35:55,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:55,213 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-11-14 17:35:55,213 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-14 17:35:55,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:55,214 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:55,214 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:35:55,214 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:35:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-14 17:35:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-14 17:35:55,216 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-11-14 17:35:55,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:35:55,216 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-14 17:35:55,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-14 17:35:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-14 17:35:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-14 17:35:55,217 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:35:55,218 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:35:55,218 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:35:55,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:35:55,218 INFO L82 PathProgramCache]: Analyzing trace with hash 486647847, now seen corresponding path program 2 times [2018-11-14 17:35:55,218 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:35:55,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:35:55,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:55,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:35:55,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:55,234 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:35:55,234 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:35:55,235 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:35:55,249 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-14 17:35:55,267 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-14 17:35:55,267 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:35:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:35:55,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:35:55,460 INFO L256 TraceCheckUtils]: 0: Hoare triple {248#true} call ULTIMATE.init(); {248#true} is VALID [2018-11-14 17:35:55,461 INFO L273 TraceCheckUtils]: 1: Hoare triple {248#true} ~__return_main~0 := 0;~__return_60~0 := 0; {248#true} is VALID [2018-11-14 17:35:55,461 INFO L273 TraceCheckUtils]: 2: Hoare triple {248#true} assume true; {248#true} is VALID [2018-11-14 17:35:55,462 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {248#true} {248#true} #28#return; {248#true} is VALID [2018-11-14 17:35:55,462 INFO L256 TraceCheckUtils]: 4: Hoare triple {248#true} call #t~ret2 := main(); {248#true} is VALID [2018-11-14 17:35:55,463 INFO L273 TraceCheckUtils]: 5: Hoare triple {248#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {248#true} is VALID [2018-11-14 17:35:55,463 INFO L273 TraceCheckUtils]: 6: Hoare triple {248#true} assume !!(1 <= ~main__n~0); {248#true} is VALID [2018-11-14 17:35:55,464 INFO L273 TraceCheckUtils]: 7: Hoare triple {248#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {274#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:35:55,465 INFO L273 TraceCheckUtils]: 8: Hoare triple {274#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {278#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:35:55,466 INFO L273 TraceCheckUtils]: 9: Hoare triple {278#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {282#(and (<= 2 main_~main__n~0) (<= main_~main__i~0 3) (= main_~main__sum~0 3))} is VALID [2018-11-14 17:35:55,467 INFO L273 TraceCheckUtils]: 10: Hoare triple {282#(and (<= 2 main_~main__n~0) (<= main_~main__i~0 3) (= main_~main__sum~0 3))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {286#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:35:55,467 INFO L273 TraceCheckUtils]: 11: Hoare triple {286#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {249#false} is VALID [2018-11-14 17:35:55,468 INFO L273 TraceCheckUtils]: 12: Hoare triple {249#false} assume !false; {249#false} is VALID [2018-11-14 17:35:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:35:55,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:35:55,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-11-14 17:35:55,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-14 17:35:55,491 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:35:55,491 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2018-11-14 17:35:55,506 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:55,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-14 17:35:55,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-14 17:35:55,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-14 17:35:55,507 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2018-11-14 17:35:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:55,799 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-14 17:35:55,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-14 17:35:55,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-14 17:35:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:35:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-14 17:35:55,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2018-11-14 17:35:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-14 17:35:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2018-11-14 17:35:55,806 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 18 transitions. [2018-11-14 17:35:55,842 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:55,843 INFO L225 Difference]: With dead ends: 18 [2018-11-14 17:35:55,843 INFO L226 Difference]: Without dead ends: 15 [2018-11-14 17:35:55,844 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-14 17:35:55,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-14 17:35:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-14 17:35:55,916 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:35:55,916 INFO L82 GeneralOperation]: Start isEquivalent. First operand 15 states. Second operand 15 states. [2018-11-14 17:35:55,916 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand 15 states. [2018-11-14 17:35:55,916 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 15 states. [2018-11-14 17:35:55,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:55,918 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-11-14 17:35:55,918 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-14 17:35:55,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:55,918 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:55,919 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand 15 states. [2018-11-14 17:35:55,919 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 15 states. [2018-11-14 17:35:55,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:55,920 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-11-14 17:35:55,921 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-14 17:35:55,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:55,921 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:55,921 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:35:55,922 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:35:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-14 17:35:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-14 17:35:55,923 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-11-14 17:35:55,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:35:55,924 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-14 17:35:55,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-14 17:35:55,924 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-14 17:35:55,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-14 17:35:55,925 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:35:55,925 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:35:55,925 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:35:55,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:35:55,926 INFO L82 PathProgramCache]: Analyzing trace with hash -2093848400, now seen corresponding path program 3 times [2018-11-14 17:35:55,926 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:35:55,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:35:55,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:55,927 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:35:55,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:55,939 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:35:55,939 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:35:55,939 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:35:55,952 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-14 17:35:55,964 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-14 17:35:55,965 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:35:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:35:55,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:35:56,170 INFO L256 TraceCheckUtils]: 0: Hoare triple {373#true} call ULTIMATE.init(); {373#true} is VALID [2018-11-14 17:35:56,171 INFO L273 TraceCheckUtils]: 1: Hoare triple {373#true} ~__return_main~0 := 0;~__return_60~0 := 0; {373#true} is VALID [2018-11-14 17:35:56,172 INFO L273 TraceCheckUtils]: 2: Hoare triple {373#true} assume true; {373#true} is VALID [2018-11-14 17:35:56,172 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {373#true} {373#true} #28#return; {373#true} is VALID [2018-11-14 17:35:56,173 INFO L256 TraceCheckUtils]: 4: Hoare triple {373#true} call #t~ret2 := main(); {373#true} is VALID [2018-11-14 17:35:56,173 INFO L273 TraceCheckUtils]: 5: Hoare triple {373#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {373#true} is VALID [2018-11-14 17:35:56,173 INFO L273 TraceCheckUtils]: 6: Hoare triple {373#true} assume !!(1 <= ~main__n~0); {373#true} is VALID [2018-11-14 17:35:56,174 INFO L273 TraceCheckUtils]: 7: Hoare triple {373#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {399#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:35:56,175 INFO L273 TraceCheckUtils]: 8: Hoare triple {399#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {403#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:35:56,176 INFO L273 TraceCheckUtils]: 9: Hoare triple {403#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {407#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:35:56,177 INFO L273 TraceCheckUtils]: 10: Hoare triple {407#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {411#(and (= main_~main__sum~0 6) (<= 3 main_~main__n~0) (<= main_~main__i~0 4))} is VALID [2018-11-14 17:35:56,178 INFO L273 TraceCheckUtils]: 11: Hoare triple {411#(and (= main_~main__sum~0 6) (<= 3 main_~main__n~0) (<= main_~main__i~0 4))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {415#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:35:56,178 INFO L273 TraceCheckUtils]: 12: Hoare triple {415#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {374#false} is VALID [2018-11-14 17:35:56,179 INFO L273 TraceCheckUtils]: 13: Hoare triple {374#false} assume !false; {374#false} is VALID [2018-11-14 17:35:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:35:56,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:35:56,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-11-14 17:35:56,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-14 17:35:56,203 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:35:56,203 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2018-11-14 17:35:56,218 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:56,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-14 17:35:56,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-14 17:35:56,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-14 17:35:56,220 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states. [2018-11-14 17:35:56,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:56,444 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-14 17:35:56,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-14 17:35:56,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-14 17:35:56,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:35:56,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-14 17:35:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 19 transitions. [2018-11-14 17:35:56,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-14 17:35:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 19 transitions. [2018-11-14 17:35:56,449 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 19 transitions. [2018-11-14 17:35:56,474 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:56,475 INFO L225 Difference]: With dead ends: 19 [2018-11-14 17:35:56,476 INFO L226 Difference]: Without dead ends: 16 [2018-11-14 17:35:56,476 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-14 17:35:56,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-14 17:35:56,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-14 17:35:56,502 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:35:56,502 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand 16 states. [2018-11-14 17:35:56,502 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2018-11-14 17:35:56,502 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2018-11-14 17:35:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:56,505 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-14 17:35:56,505 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-14 17:35:56,505 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:56,505 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:56,506 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2018-11-14 17:35:56,506 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2018-11-14 17:35:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:56,507 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-14 17:35:56,508 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-14 17:35:56,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:56,508 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:56,508 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:35:56,509 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:35:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-14 17:35:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-14 17:35:56,511 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-11-14 17:35:56,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:35:56,511 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-14 17:35:56,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-14 17:35:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-14 17:35:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-14 17:35:56,512 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:35:56,512 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:35:56,513 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:35:56,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:35:56,513 INFO L82 PathProgramCache]: Analyzing trace with hash -484853433, now seen corresponding path program 4 times [2018-11-14 17:35:56,513 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:35:56,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:35:56,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:56,514 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:35:56,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:56,532 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:35:56,532 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:35:56,532 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:35:56,542 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-14 17:35:56,584 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-14 17:35:56,585 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:35:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:35:56,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:35:56,810 INFO L256 TraceCheckUtils]: 0: Hoare triple {508#true} call ULTIMATE.init(); {508#true} is VALID [2018-11-14 17:35:56,811 INFO L273 TraceCheckUtils]: 1: Hoare triple {508#true} ~__return_main~0 := 0;~__return_60~0 := 0; {508#true} is VALID [2018-11-14 17:35:56,811 INFO L273 TraceCheckUtils]: 2: Hoare triple {508#true} assume true; {508#true} is VALID [2018-11-14 17:35:56,812 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {508#true} {508#true} #28#return; {508#true} is VALID [2018-11-14 17:35:56,813 INFO L256 TraceCheckUtils]: 4: Hoare triple {508#true} call #t~ret2 := main(); {508#true} is VALID [2018-11-14 17:35:56,813 INFO L273 TraceCheckUtils]: 5: Hoare triple {508#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {508#true} is VALID [2018-11-14 17:35:56,814 INFO L273 TraceCheckUtils]: 6: Hoare triple {508#true} assume !!(1 <= ~main__n~0); {508#true} is VALID [2018-11-14 17:35:56,816 INFO L273 TraceCheckUtils]: 7: Hoare triple {508#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {534#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:35:56,822 INFO L273 TraceCheckUtils]: 8: Hoare triple {534#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {538#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:35:56,823 INFO L273 TraceCheckUtils]: 9: Hoare triple {538#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {542#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:35:56,823 INFO L273 TraceCheckUtils]: 10: Hoare triple {542#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {546#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:35:56,824 INFO L273 TraceCheckUtils]: 11: Hoare triple {546#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {550#(and (<= 4 main_~main__n~0) (= main_~main__sum~0 10) (<= main_~main__i~0 5))} is VALID [2018-11-14 17:35:56,827 INFO L273 TraceCheckUtils]: 12: Hoare triple {550#(and (<= 4 main_~main__n~0) (= main_~main__sum~0 10) (<= main_~main__i~0 5))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {554#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:35:56,828 INFO L273 TraceCheckUtils]: 13: Hoare triple {554#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {509#false} is VALID [2018-11-14 17:35:56,828 INFO L273 TraceCheckUtils]: 14: Hoare triple {509#false} assume !false; {509#false} is VALID [2018-11-14 17:35:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:35:56,849 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:35:56,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-11-14 17:35:56,850 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-11-14 17:35:56,850 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:35:56,851 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2018-11-14 17:35:56,871 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:56,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-14 17:35:56,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-14 17:35:56,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-14 17:35:56,872 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2018-11-14 17:35:57,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:57,128 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-14 17:35:57,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-14 17:35:57,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-11-14 17:35:57,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:35:57,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-14 17:35:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2018-11-14 17:35:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-14 17:35:57,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2018-11-14 17:35:57,133 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 20 transitions. [2018-11-14 17:35:57,217 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:57,218 INFO L225 Difference]: With dead ends: 20 [2018-11-14 17:35:57,218 INFO L226 Difference]: Without dead ends: 17 [2018-11-14 17:35:57,219 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-14 17:35:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-14 17:35:57,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-14 17:35:57,246 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:35:57,246 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand 17 states. [2018-11-14 17:35:57,247 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand 17 states. [2018-11-14 17:35:57,247 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 17 states. [2018-11-14 17:35:57,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:57,249 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-11-14 17:35:57,250 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-14 17:35:57,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:57,250 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:57,250 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand 17 states. [2018-11-14 17:35:57,251 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 17 states. [2018-11-14 17:35:57,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:57,252 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-11-14 17:35:57,253 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-14 17:35:57,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:57,253 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:57,253 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:35:57,253 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:35:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-14 17:35:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-14 17:35:57,255 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-11-14 17:35:57,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:35:57,255 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-14 17:35:57,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-14 17:35:57,256 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-14 17:35:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-14 17:35:57,256 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:35:57,257 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:35:57,257 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:35:57,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:35:57,257 INFO L82 PathProgramCache]: Analyzing trace with hash -2145617008, now seen corresponding path program 5 times [2018-11-14 17:35:57,257 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:35:57,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:35:57,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:57,259 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:35:57,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:57,276 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:35:57,276 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:35:57,277 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:35:57,296 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-14 17:35:57,310 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-11-14 17:35:57,311 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:35:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:35:57,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:35:57,501 INFO L256 TraceCheckUtils]: 0: Hoare triple {653#true} call ULTIMATE.init(); {653#true} is VALID [2018-11-14 17:35:57,502 INFO L273 TraceCheckUtils]: 1: Hoare triple {653#true} ~__return_main~0 := 0;~__return_60~0 := 0; {653#true} is VALID [2018-11-14 17:35:57,502 INFO L273 TraceCheckUtils]: 2: Hoare triple {653#true} assume true; {653#true} is VALID [2018-11-14 17:35:57,502 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {653#true} {653#true} #28#return; {653#true} is VALID [2018-11-14 17:35:57,503 INFO L256 TraceCheckUtils]: 4: Hoare triple {653#true} call #t~ret2 := main(); {653#true} is VALID [2018-11-14 17:35:57,503 INFO L273 TraceCheckUtils]: 5: Hoare triple {653#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {653#true} is VALID [2018-11-14 17:35:57,504 INFO L273 TraceCheckUtils]: 6: Hoare triple {653#true} assume !!(1 <= ~main__n~0); {653#true} is VALID [2018-11-14 17:35:57,504 INFO L273 TraceCheckUtils]: 7: Hoare triple {653#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {679#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:35:57,510 INFO L273 TraceCheckUtils]: 8: Hoare triple {679#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {683#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:35:57,511 INFO L273 TraceCheckUtils]: 9: Hoare triple {683#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {687#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:35:57,512 INFO L273 TraceCheckUtils]: 10: Hoare triple {687#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {691#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:35:57,513 INFO L273 TraceCheckUtils]: 11: Hoare triple {691#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {695#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:35:57,513 INFO L273 TraceCheckUtils]: 12: Hoare triple {695#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {699#(and (<= main_~main__i~0 6) (= main_~main__sum~0 15) (<= 5 main_~main__n~0))} is VALID [2018-11-14 17:35:57,514 INFO L273 TraceCheckUtils]: 13: Hoare triple {699#(and (<= main_~main__i~0 6) (= main_~main__sum~0 15) (<= 5 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {703#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:35:57,516 INFO L273 TraceCheckUtils]: 14: Hoare triple {703#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {654#false} is VALID [2018-11-14 17:35:57,517 INFO L273 TraceCheckUtils]: 15: Hoare triple {654#false} assume !false; {654#false} is VALID [2018-11-14 17:35:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:35:57,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:35:57,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-14 17:35:57,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-11-14 17:35:57,540 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:35:57,540 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2018-11-14 17:35:57,557 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:57,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-14 17:35:57,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-14 17:35:57,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-14 17:35:57,558 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-11-14 17:35:57,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:57,988 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-14 17:35:57,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-14 17:35:57,989 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-11-14 17:35:57,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:35:57,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-14 17:35:57,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 21 transitions. [2018-11-14 17:35:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-14 17:35:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 21 transitions. [2018-11-14 17:35:57,994 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 21 transitions. [2018-11-14 17:35:58,032 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:58,033 INFO L225 Difference]: With dead ends: 21 [2018-11-14 17:35:58,034 INFO L226 Difference]: Without dead ends: 18 [2018-11-14 17:35:58,034 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-14 17:35:58,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-14 17:35:58,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-14 17:35:58,080 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:35:58,080 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand 18 states. [2018-11-14 17:35:58,081 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2018-11-14 17:35:58,081 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2018-11-14 17:35:58,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:58,083 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-14 17:35:58,083 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-14 17:35:58,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:58,084 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:58,084 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2018-11-14 17:35:58,084 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2018-11-14 17:35:58,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:58,086 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-14 17:35:58,086 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-14 17:35:58,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:58,087 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:58,087 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:35:58,087 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:35:58,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-14 17:35:58,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-14 17:35:58,089 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-11-14 17:35:58,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:35:58,089 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-14 17:35:58,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-14 17:35:58,089 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-14 17:35:58,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-14 17:35:58,090 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:35:58,090 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:35:58,090 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:35:58,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:35:58,091 INFO L82 PathProgramCache]: Analyzing trace with hash -2089680281, now seen corresponding path program 6 times [2018-11-14 17:35:58,091 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:35:58,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:35:58,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:58,092 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:35:58,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:58,104 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:35:58,105 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:35:58,105 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:35:58,119 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-14 17:35:58,135 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-11-14 17:35:58,135 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:35:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:35:58,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:35:58,376 INFO L256 TraceCheckUtils]: 0: Hoare triple {808#true} call ULTIMATE.init(); {808#true} is VALID [2018-11-14 17:35:58,377 INFO L273 TraceCheckUtils]: 1: Hoare triple {808#true} ~__return_main~0 := 0;~__return_60~0 := 0; {808#true} is VALID [2018-11-14 17:35:58,377 INFO L273 TraceCheckUtils]: 2: Hoare triple {808#true} assume true; {808#true} is VALID [2018-11-14 17:35:58,378 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {808#true} {808#true} #28#return; {808#true} is VALID [2018-11-14 17:35:58,378 INFO L256 TraceCheckUtils]: 4: Hoare triple {808#true} call #t~ret2 := main(); {808#true} is VALID [2018-11-14 17:35:58,378 INFO L273 TraceCheckUtils]: 5: Hoare triple {808#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {808#true} is VALID [2018-11-14 17:35:58,378 INFO L273 TraceCheckUtils]: 6: Hoare triple {808#true} assume !!(1 <= ~main__n~0); {808#true} is VALID [2018-11-14 17:35:58,379 INFO L273 TraceCheckUtils]: 7: Hoare triple {808#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {834#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:35:58,380 INFO L273 TraceCheckUtils]: 8: Hoare triple {834#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {838#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:35:58,381 INFO L273 TraceCheckUtils]: 9: Hoare triple {838#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {842#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:35:58,381 INFO L273 TraceCheckUtils]: 10: Hoare triple {842#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {846#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:35:58,385 INFO L273 TraceCheckUtils]: 11: Hoare triple {846#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {850#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:35:58,386 INFO L273 TraceCheckUtils]: 12: Hoare triple {850#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {854#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:35:58,387 INFO L273 TraceCheckUtils]: 13: Hoare triple {854#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {858#(and (= main_~main__sum~0 21) (<= main_~main__i~0 7) (<= 6 main_~main__n~0))} is VALID [2018-11-14 17:35:58,388 INFO L273 TraceCheckUtils]: 14: Hoare triple {858#(and (= main_~main__sum~0 21) (<= main_~main__i~0 7) (<= 6 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {862#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:35:58,388 INFO L273 TraceCheckUtils]: 15: Hoare triple {862#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {809#false} is VALID [2018-11-14 17:35:58,389 INFO L273 TraceCheckUtils]: 16: Hoare triple {809#false} assume !false; {809#false} is VALID [2018-11-14 17:35:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:35:58,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:35:58,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-11-14 17:35:58,412 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-11-14 17:35:58,412 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:35:58,412 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2018-11-14 17:35:58,431 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:58,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-14 17:35:58,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-14 17:35:58,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-14 17:35:58,432 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2018-11-14 17:35:58,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:58,833 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-14 17:35:58,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-14 17:35:58,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-11-14 17:35:58,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:35:58,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-14 17:35:58,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 22 transitions. [2018-11-14 17:35:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-14 17:35:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 22 transitions. [2018-11-14 17:35:58,837 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states and 22 transitions. [2018-11-14 17:35:58,861 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:58,862 INFO L225 Difference]: With dead ends: 22 [2018-11-14 17:35:58,863 INFO L226 Difference]: Without dead ends: 19 [2018-11-14 17:35:58,863 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-11-14 17:35:58,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-14 17:35:58,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-14 17:35:58,890 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:35:58,890 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2018-11-14 17:35:58,891 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2018-11-14 17:35:58,891 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2018-11-14 17:35:58,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:58,893 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-14 17:35:58,893 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-14 17:35:58,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:58,894 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:58,894 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2018-11-14 17:35:58,894 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2018-11-14 17:35:58,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:58,896 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-14 17:35:58,896 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-14 17:35:58,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:35:58,897 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:35:58,897 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:35:58,897 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:35:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-14 17:35:58,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-14 17:35:58,899 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-11-14 17:35:58,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:35:58,899 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-14 17:35:58,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-14 17:35:58,899 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-14 17:35:58,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-14 17:35:58,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:35:58,900 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:35:58,900 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:35:58,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:35:58,901 INFO L82 PathProgramCache]: Analyzing trace with hash -355641744, now seen corresponding path program 7 times [2018-11-14 17:35:58,901 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:35:58,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:35:58,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:58,902 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:35:58,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:35:58,916 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:35:58,916 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:35:58,916 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:35:58,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:35:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:35:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:35:58,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:35:59,251 INFO L256 TraceCheckUtils]: 0: Hoare triple {973#true} call ULTIMATE.init(); {973#true} is VALID [2018-11-14 17:35:59,252 INFO L273 TraceCheckUtils]: 1: Hoare triple {973#true} ~__return_main~0 := 0;~__return_60~0 := 0; {973#true} is VALID [2018-11-14 17:35:59,252 INFO L273 TraceCheckUtils]: 2: Hoare triple {973#true} assume true; {973#true} is VALID [2018-11-14 17:35:59,253 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {973#true} {973#true} #28#return; {973#true} is VALID [2018-11-14 17:35:59,253 INFO L256 TraceCheckUtils]: 4: Hoare triple {973#true} call #t~ret2 := main(); {973#true} is VALID [2018-11-14 17:35:59,253 INFO L273 TraceCheckUtils]: 5: Hoare triple {973#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {973#true} is VALID [2018-11-14 17:35:59,254 INFO L273 TraceCheckUtils]: 6: Hoare triple {973#true} assume !!(1 <= ~main__n~0); {973#true} is VALID [2018-11-14 17:35:59,260 INFO L273 TraceCheckUtils]: 7: Hoare triple {973#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {999#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:35:59,261 INFO L273 TraceCheckUtils]: 8: Hoare triple {999#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1003#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:35:59,261 INFO L273 TraceCheckUtils]: 9: Hoare triple {1003#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1007#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:35:59,262 INFO L273 TraceCheckUtils]: 10: Hoare triple {1007#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1011#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:35:59,263 INFO L273 TraceCheckUtils]: 11: Hoare triple {1011#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1015#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:35:59,264 INFO L273 TraceCheckUtils]: 12: Hoare triple {1015#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1019#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:35:59,264 INFO L273 TraceCheckUtils]: 13: Hoare triple {1019#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1023#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:35:59,266 INFO L273 TraceCheckUtils]: 14: Hoare triple {1023#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1027#(and (<= main_~main__i~0 8) (<= 7 main_~main__n~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:35:59,268 INFO L273 TraceCheckUtils]: 15: Hoare triple {1027#(and (<= main_~main__i~0 8) (<= 7 main_~main__n~0) (= main_~main__sum~0 28))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {1031#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:35:59,270 INFO L273 TraceCheckUtils]: 16: Hoare triple {1031#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {974#false} is VALID [2018-11-14 17:35:59,270 INFO L273 TraceCheckUtils]: 17: Hoare triple {974#false} assume !false; {974#false} is VALID [2018-11-14 17:35:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:35:59,292 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:35:59,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-11-14 17:35:59,292 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2018-11-14 17:35:59,292 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:35:59,293 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 11 states. [2018-11-14 17:35:59,357 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:59,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-14 17:35:59,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-14 17:35:59,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-14 17:35:59,358 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 11 states. [2018-11-14 17:35:59,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:35:59,893 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-14 17:35:59,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-14 17:35:59,894 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2018-11-14 17:35:59,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:35:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-14 17:35:59,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 23 transitions. [2018-11-14 17:35:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-14 17:35:59,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 23 transitions. [2018-11-14 17:35:59,898 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 11 states and 23 transitions. [2018-11-14 17:35:59,932 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:35:59,933 INFO L225 Difference]: With dead ends: 23 [2018-11-14 17:35:59,933 INFO L226 Difference]: Without dead ends: 20 [2018-11-14 17:35:59,934 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-11-14 17:35:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-14 17:36:00,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-14 17:36:00,038 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:00,039 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 20 states. [2018-11-14 17:36:00,039 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2018-11-14 17:36:00,039 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2018-11-14 17:36:00,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:00,040 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-14 17:36:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-14 17:36:00,041 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:00,041 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:00,041 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2018-11-14 17:36:00,042 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2018-11-14 17:36:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:00,043 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-14 17:36:00,043 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-14 17:36:00,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:00,044 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:00,044 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:00,044 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:00,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-14 17:36:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-14 17:36:00,046 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-11-14 17:36:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:00,046 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-14 17:36:00,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-14 17:36:00,051 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-14 17:36:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-14 17:36:00,051 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:00,051 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:00,052 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:00,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:00,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1859945351, now seen corresponding path program 8 times [2018-11-14 17:36:00,052 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:00,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:00,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:00,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:36:00,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:00,066 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:00,066 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:00,066 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:00,082 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-14 17:36:00,103 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-14 17:36:00,104 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:00,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:00,499 INFO L256 TraceCheckUtils]: 0: Hoare triple {1148#true} call ULTIMATE.init(); {1148#true} is VALID [2018-11-14 17:36:00,499 INFO L273 TraceCheckUtils]: 1: Hoare triple {1148#true} ~__return_main~0 := 0;~__return_60~0 := 0; {1148#true} is VALID [2018-11-14 17:36:00,499 INFO L273 TraceCheckUtils]: 2: Hoare triple {1148#true} assume true; {1148#true} is VALID [2018-11-14 17:36:00,500 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {1148#true} {1148#true} #28#return; {1148#true} is VALID [2018-11-14 17:36:00,500 INFO L256 TraceCheckUtils]: 4: Hoare triple {1148#true} call #t~ret2 := main(); {1148#true} is VALID [2018-11-14 17:36:00,500 INFO L273 TraceCheckUtils]: 5: Hoare triple {1148#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {1148#true} is VALID [2018-11-14 17:36:00,501 INFO L273 TraceCheckUtils]: 6: Hoare triple {1148#true} assume !!(1 <= ~main__n~0); {1148#true} is VALID [2018-11-14 17:36:00,516 INFO L273 TraceCheckUtils]: 7: Hoare triple {1148#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {1174#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:00,518 INFO L273 TraceCheckUtils]: 8: Hoare triple {1174#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1178#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:00,518 INFO L273 TraceCheckUtils]: 9: Hoare triple {1178#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1182#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:00,519 INFO L273 TraceCheckUtils]: 10: Hoare triple {1182#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1186#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:00,521 INFO L273 TraceCheckUtils]: 11: Hoare triple {1186#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1190#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:00,526 INFO L273 TraceCheckUtils]: 12: Hoare triple {1190#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1194#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:00,526 INFO L273 TraceCheckUtils]: 13: Hoare triple {1194#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1198#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:00,527 INFO L273 TraceCheckUtils]: 14: Hoare triple {1198#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1202#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:00,528 INFO L273 TraceCheckUtils]: 15: Hoare triple {1202#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1206#(and (<= main_~main__i~0 9) (<= 8 main_~main__n~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:00,530 INFO L273 TraceCheckUtils]: 16: Hoare triple {1206#(and (<= main_~main__i~0 9) (<= 8 main_~main__n~0) (= main_~main__sum~0 36))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {1210#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:00,530 INFO L273 TraceCheckUtils]: 17: Hoare triple {1210#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {1149#false} is VALID [2018-11-14 17:36:00,530 INFO L273 TraceCheckUtils]: 18: Hoare triple {1149#false} assume !false; {1149#false} is VALID [2018-11-14 17:36:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:00,558 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:00,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-11-14 17:36:00,559 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2018-11-14 17:36:00,559 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:00,559 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states. [2018-11-14 17:36:00,585 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:00,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-14 17:36:00,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-14 17:36:00,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-14 17:36:00,586 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 12 states. [2018-11-14 17:36:01,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:01,367 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-11-14 17:36:01,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-14 17:36:01,367 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2018-11-14 17:36:01,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-14 17:36:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 24 transitions. [2018-11-14 17:36:01,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-14 17:36:01,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 24 transitions. [2018-11-14 17:36:01,371 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states and 24 transitions. [2018-11-14 17:36:01,394 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:01,395 INFO L225 Difference]: With dead ends: 24 [2018-11-14 17:36:01,395 INFO L226 Difference]: Without dead ends: 21 [2018-11-14 17:36:01,396 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2018-11-14 17:36:01,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-14 17:36:01,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-14 17:36:01,424 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:01,424 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand 21 states. [2018-11-14 17:36:01,424 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2018-11-14 17:36:01,424 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2018-11-14 17:36:01,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:01,426 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-14 17:36:01,426 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-14 17:36:01,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:01,427 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:01,427 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2018-11-14 17:36:01,427 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2018-11-14 17:36:01,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:01,428 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-14 17:36:01,429 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-14 17:36:01,429 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:01,429 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:01,429 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:01,429 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-14 17:36:01,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-14 17:36:01,431 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-11-14 17:36:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:01,431 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-14 17:36:01,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-14 17:36:01,431 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-14 17:36:01,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-14 17:36:01,432 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:01,432 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:01,432 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:01,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:01,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1823668560, now seen corresponding path program 9 times [2018-11-14 17:36:01,433 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:01,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:01,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:01,434 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:01,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:01,445 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:01,445 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:01,445 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:01,468 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-14 17:36:01,494 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-14 17:36:01,494 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:01,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:01,812 INFO L256 TraceCheckUtils]: 0: Hoare triple {1333#true} call ULTIMATE.init(); {1333#true} is VALID [2018-11-14 17:36:01,813 INFO L273 TraceCheckUtils]: 1: Hoare triple {1333#true} ~__return_main~0 := 0;~__return_60~0 := 0; {1333#true} is VALID [2018-11-14 17:36:01,813 INFO L273 TraceCheckUtils]: 2: Hoare triple {1333#true} assume true; {1333#true} is VALID [2018-11-14 17:36:01,813 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {1333#true} {1333#true} #28#return; {1333#true} is VALID [2018-11-14 17:36:01,813 INFO L256 TraceCheckUtils]: 4: Hoare triple {1333#true} call #t~ret2 := main(); {1333#true} is VALID [2018-11-14 17:36:01,813 INFO L273 TraceCheckUtils]: 5: Hoare triple {1333#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {1333#true} is VALID [2018-11-14 17:36:01,814 INFO L273 TraceCheckUtils]: 6: Hoare triple {1333#true} assume !!(1 <= ~main__n~0); {1333#true} is VALID [2018-11-14 17:36:01,814 INFO L273 TraceCheckUtils]: 7: Hoare triple {1333#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {1359#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:01,815 INFO L273 TraceCheckUtils]: 8: Hoare triple {1359#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1363#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:36:01,816 INFO L273 TraceCheckUtils]: 9: Hoare triple {1363#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1367#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:01,817 INFO L273 TraceCheckUtils]: 10: Hoare triple {1367#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1371#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:01,817 INFO L273 TraceCheckUtils]: 11: Hoare triple {1371#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1375#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:01,818 INFO L273 TraceCheckUtils]: 12: Hoare triple {1375#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1379#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:01,819 INFO L273 TraceCheckUtils]: 13: Hoare triple {1379#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1383#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:01,820 INFO L273 TraceCheckUtils]: 14: Hoare triple {1383#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1387#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:01,821 INFO L273 TraceCheckUtils]: 15: Hoare triple {1387#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1391#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:01,822 INFO L273 TraceCheckUtils]: 16: Hoare triple {1391#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1395#(and (= main_~main__sum~0 45) (<= 9 main_~main__n~0) (<= main_~main__i~0 10))} is VALID [2018-11-14 17:36:01,823 INFO L273 TraceCheckUtils]: 17: Hoare triple {1395#(and (= main_~main__sum~0 45) (<= 9 main_~main__n~0) (<= main_~main__i~0 10))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {1399#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:01,824 INFO L273 TraceCheckUtils]: 18: Hoare triple {1399#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {1334#false} is VALID [2018-11-14 17:36:01,824 INFO L273 TraceCheckUtils]: 19: Hoare triple {1334#false} assume !false; {1334#false} is VALID [2018-11-14 17:36:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:01,856 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:01,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-11-14 17:36:01,857 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-11-14 17:36:01,857 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:01,857 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 13 states. [2018-11-14 17:36:01,891 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:01,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-14 17:36:01,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-14 17:36:01,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-14 17:36:01,893 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 13 states. [2018-11-14 17:36:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:02,395 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-14 17:36:02,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-14 17:36:02,396 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-11-14 17:36:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-14 17:36:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 25 transitions. [2018-11-14 17:36:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-14 17:36:02,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 25 transitions. [2018-11-14 17:36:02,399 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 13 states and 25 transitions. [2018-11-14 17:36:02,426 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:02,427 INFO L225 Difference]: With dead ends: 25 [2018-11-14 17:36:02,427 INFO L226 Difference]: Without dead ends: 22 [2018-11-14 17:36:02,428 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2018-11-14 17:36:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-14 17:36:02,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-14 17:36:02,489 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:02,489 INFO L82 GeneralOperation]: Start isEquivalent. First operand 22 states. Second operand 22 states. [2018-11-14 17:36:02,490 INFO L74 IsIncluded]: Start isIncluded. First operand 22 states. Second operand 22 states. [2018-11-14 17:36:02,490 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 22 states. [2018-11-14 17:36:02,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:02,491 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-14 17:36:02,491 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-14 17:36:02,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:02,492 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:02,492 INFO L74 IsIncluded]: Start isIncluded. First operand 22 states. Second operand 22 states. [2018-11-14 17:36:02,492 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 22 states. [2018-11-14 17:36:02,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:02,494 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-14 17:36:02,494 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-14 17:36:02,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:02,494 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:02,494 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:02,494 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-14 17:36:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-14 17:36:02,496 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-11-14 17:36:02,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:02,496 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-14 17:36:02,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-14 17:36:02,496 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-14 17:36:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-14 17:36:02,497 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:02,497 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:02,497 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:02,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:02,498 INFO L82 PathProgramCache]: Analyzing trace with hash 699088039, now seen corresponding path program 10 times [2018-11-14 17:36:02,498 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:02,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:02,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:02,499 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:02,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:02,510 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:02,510 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:02,510 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:02,530 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-14 17:36:02,605 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-14 17:36:02,605 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:02,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:02,849 INFO L256 TraceCheckUtils]: 0: Hoare triple {1528#true} call ULTIMATE.init(); {1528#true} is VALID [2018-11-14 17:36:02,849 INFO L273 TraceCheckUtils]: 1: Hoare triple {1528#true} ~__return_main~0 := 0;~__return_60~0 := 0; {1528#true} is VALID [2018-11-14 17:36:02,850 INFO L273 TraceCheckUtils]: 2: Hoare triple {1528#true} assume true; {1528#true} is VALID [2018-11-14 17:36:02,850 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {1528#true} {1528#true} #28#return; {1528#true} is VALID [2018-11-14 17:36:02,850 INFO L256 TraceCheckUtils]: 4: Hoare triple {1528#true} call #t~ret2 := main(); {1528#true} is VALID [2018-11-14 17:36:02,850 INFO L273 TraceCheckUtils]: 5: Hoare triple {1528#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {1528#true} is VALID [2018-11-14 17:36:02,850 INFO L273 TraceCheckUtils]: 6: Hoare triple {1528#true} assume !!(1 <= ~main__n~0); {1528#true} is VALID [2018-11-14 17:36:02,851 INFO L273 TraceCheckUtils]: 7: Hoare triple {1528#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {1554#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:02,852 INFO L273 TraceCheckUtils]: 8: Hoare triple {1554#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1558#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:36:02,852 INFO L273 TraceCheckUtils]: 9: Hoare triple {1558#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1562#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:02,853 INFO L273 TraceCheckUtils]: 10: Hoare triple {1562#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1566#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:02,853 INFO L273 TraceCheckUtils]: 11: Hoare triple {1566#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1570#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:02,854 INFO L273 TraceCheckUtils]: 12: Hoare triple {1570#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1574#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:02,855 INFO L273 TraceCheckUtils]: 13: Hoare triple {1574#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1578#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:02,856 INFO L273 TraceCheckUtils]: 14: Hoare triple {1578#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1582#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:02,857 INFO L273 TraceCheckUtils]: 15: Hoare triple {1582#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1586#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:02,858 INFO L273 TraceCheckUtils]: 16: Hoare triple {1586#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1590#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:02,859 INFO L273 TraceCheckUtils]: 17: Hoare triple {1590#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1594#(and (= main_~main__sum~0 55) (<= main_~main__i~0 11) (<= 10 main_~main__n~0))} is VALID [2018-11-14 17:36:02,860 INFO L273 TraceCheckUtils]: 18: Hoare triple {1594#(and (= main_~main__sum~0 55) (<= main_~main__i~0 11) (<= 10 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {1598#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:02,860 INFO L273 TraceCheckUtils]: 19: Hoare triple {1598#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {1529#false} is VALID [2018-11-14 17:36:02,861 INFO L273 TraceCheckUtils]: 20: Hoare triple {1529#false} assume !false; {1529#false} is VALID [2018-11-14 17:36:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:02,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:02,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-11-14 17:36:02,883 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2018-11-14 17:36:02,884 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:02,884 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 14 states. [2018-11-14 17:36:02,902 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:02,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-14 17:36:02,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-14 17:36:02,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-11-14 17:36:02,903 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 14 states. [2018-11-14 17:36:03,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:03,419 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-11-14 17:36:03,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-14 17:36:03,419 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2018-11-14 17:36:03,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:03,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-14 17:36:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 26 transitions. [2018-11-14 17:36:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-14 17:36:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 26 transitions. [2018-11-14 17:36:03,422 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 14 states and 26 transitions. [2018-11-14 17:36:03,473 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:03,474 INFO L225 Difference]: With dead ends: 26 [2018-11-14 17:36:03,474 INFO L226 Difference]: Without dead ends: 23 [2018-11-14 17:36:03,474 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2018-11-14 17:36:03,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-14 17:36:03,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-14 17:36:03,515 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:03,515 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand 23 states. [2018-11-14 17:36:03,515 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2018-11-14 17:36:03,515 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2018-11-14 17:36:03,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:03,517 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-14 17:36:03,518 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-14 17:36:03,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:03,518 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:03,518 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2018-11-14 17:36:03,518 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2018-11-14 17:36:03,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:03,520 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-14 17:36:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-14 17:36:03,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:03,520 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:03,520 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:03,520 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:03,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-14 17:36:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-14 17:36:03,522 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-11-14 17:36:03,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:03,522 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-14 17:36:03,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-14 17:36:03,522 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-14 17:36:03,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-14 17:36:03,523 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:03,523 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:03,523 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:03,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:03,523 INFO L82 PathProgramCache]: Analyzing trace with hash 196830256, now seen corresponding path program 11 times [2018-11-14 17:36:03,524 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:03,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:03,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:03,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:03,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:03,535 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:03,535 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:03,535 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:03,555 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-14 17:36:03,582 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-11-14 17:36:03,582 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:03,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:03,869 INFO L256 TraceCheckUtils]: 0: Hoare triple {1733#true} call ULTIMATE.init(); {1733#true} is VALID [2018-11-14 17:36:03,869 INFO L273 TraceCheckUtils]: 1: Hoare triple {1733#true} ~__return_main~0 := 0;~__return_60~0 := 0; {1733#true} is VALID [2018-11-14 17:36:03,870 INFO L273 TraceCheckUtils]: 2: Hoare triple {1733#true} assume true; {1733#true} is VALID [2018-11-14 17:36:03,870 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {1733#true} {1733#true} #28#return; {1733#true} is VALID [2018-11-14 17:36:03,870 INFO L256 TraceCheckUtils]: 4: Hoare triple {1733#true} call #t~ret2 := main(); {1733#true} is VALID [2018-11-14 17:36:03,870 INFO L273 TraceCheckUtils]: 5: Hoare triple {1733#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {1733#true} is VALID [2018-11-14 17:36:03,870 INFO L273 TraceCheckUtils]: 6: Hoare triple {1733#true} assume !!(1 <= ~main__n~0); {1733#true} is VALID [2018-11-14 17:36:03,871 INFO L273 TraceCheckUtils]: 7: Hoare triple {1733#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {1759#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:03,872 INFO L273 TraceCheckUtils]: 8: Hoare triple {1759#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1763#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:36:03,878 INFO L273 TraceCheckUtils]: 9: Hoare triple {1763#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1767#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:03,879 INFO L273 TraceCheckUtils]: 10: Hoare triple {1767#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1771#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:03,880 INFO L273 TraceCheckUtils]: 11: Hoare triple {1771#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1775#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:03,880 INFO L273 TraceCheckUtils]: 12: Hoare triple {1775#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1779#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:03,881 INFO L273 TraceCheckUtils]: 13: Hoare triple {1779#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1783#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:03,881 INFO L273 TraceCheckUtils]: 14: Hoare triple {1783#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1787#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:03,882 INFO L273 TraceCheckUtils]: 15: Hoare triple {1787#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1791#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:03,885 INFO L273 TraceCheckUtils]: 16: Hoare triple {1791#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1795#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:03,886 INFO L273 TraceCheckUtils]: 17: Hoare triple {1795#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1799#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:03,886 INFO L273 TraceCheckUtils]: 18: Hoare triple {1799#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1803#(and (= main_~main__sum~0 66) (<= main_~main__i~0 12) (<= 11 main_~main__n~0))} is VALID [2018-11-14 17:36:03,887 INFO L273 TraceCheckUtils]: 19: Hoare triple {1803#(and (= main_~main__sum~0 66) (<= main_~main__i~0 12) (<= 11 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {1807#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:03,888 INFO L273 TraceCheckUtils]: 20: Hoare triple {1807#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {1734#false} is VALID [2018-11-14 17:36:03,888 INFO L273 TraceCheckUtils]: 21: Hoare triple {1734#false} assume !false; {1734#false} is VALID [2018-11-14 17:36:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:03,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:03,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-11-14 17:36:03,911 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2018-11-14 17:36:03,911 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:03,911 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 15 states. [2018-11-14 17:36:03,932 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:03,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-14 17:36:03,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-14 17:36:03,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-14 17:36:03,933 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 15 states. [2018-11-14 17:36:04,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:04,779 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-11-14 17:36:04,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-14 17:36:04,780 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2018-11-14 17:36:04,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-14 17:36:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 27 transitions. [2018-11-14 17:36:04,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-14 17:36:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 27 transitions. [2018-11-14 17:36:04,783 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 15 states and 27 transitions. [2018-11-14 17:36:04,900 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:04,901 INFO L225 Difference]: With dead ends: 27 [2018-11-14 17:36:04,901 INFO L226 Difference]: Without dead ends: 24 [2018-11-14 17:36:04,902 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2018-11-14 17:36:04,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-14 17:36:04,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-14 17:36:04,974 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:04,974 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand 24 states. [2018-11-14 17:36:04,974 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 24 states. [2018-11-14 17:36:04,974 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 24 states. [2018-11-14 17:36:04,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:04,975 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-11-14 17:36:04,975 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-14 17:36:04,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:04,976 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:04,976 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 24 states. [2018-11-14 17:36:04,976 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 24 states. [2018-11-14 17:36:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:04,977 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-11-14 17:36:04,977 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-14 17:36:04,977 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:04,978 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:04,978 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:04,978 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:04,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-14 17:36:04,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-14 17:36:04,979 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-11-14 17:36:04,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:04,979 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-14 17:36:04,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-14 17:36:04,979 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-14 17:36:04,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-14 17:36:04,980 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:04,980 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:04,980 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:04,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:04,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1806708167, now seen corresponding path program 12 times [2018-11-14 17:36:04,981 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:04,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:04,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:04,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:04,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:04,992 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:04,992 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:04,992 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:05,005 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-14 17:36:05,030 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-14 17:36:05,030 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:05,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:05,618 INFO L256 TraceCheckUtils]: 0: Hoare triple {1948#true} call ULTIMATE.init(); {1948#true} is VALID [2018-11-14 17:36:05,619 INFO L273 TraceCheckUtils]: 1: Hoare triple {1948#true} ~__return_main~0 := 0;~__return_60~0 := 0; {1948#true} is VALID [2018-11-14 17:36:05,619 INFO L273 TraceCheckUtils]: 2: Hoare triple {1948#true} assume true; {1948#true} is VALID [2018-11-14 17:36:05,619 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {1948#true} {1948#true} #28#return; {1948#true} is VALID [2018-11-14 17:36:05,619 INFO L256 TraceCheckUtils]: 4: Hoare triple {1948#true} call #t~ret2 := main(); {1948#true} is VALID [2018-11-14 17:36:05,620 INFO L273 TraceCheckUtils]: 5: Hoare triple {1948#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {1948#true} is VALID [2018-11-14 17:36:05,620 INFO L273 TraceCheckUtils]: 6: Hoare triple {1948#true} assume !!(1 <= ~main__n~0); {1948#true} is VALID [2018-11-14 17:36:05,626 INFO L273 TraceCheckUtils]: 7: Hoare triple {1948#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {1974#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:05,626 INFO L273 TraceCheckUtils]: 8: Hoare triple {1974#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1978#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:36:05,627 INFO L273 TraceCheckUtils]: 9: Hoare triple {1978#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1982#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:05,628 INFO L273 TraceCheckUtils]: 10: Hoare triple {1982#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1986#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:05,628 INFO L273 TraceCheckUtils]: 11: Hoare triple {1986#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1990#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:05,629 INFO L273 TraceCheckUtils]: 12: Hoare triple {1990#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1994#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:05,630 INFO L273 TraceCheckUtils]: 13: Hoare triple {1994#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {1998#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:05,631 INFO L273 TraceCheckUtils]: 14: Hoare triple {1998#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2002#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:05,632 INFO L273 TraceCheckUtils]: 15: Hoare triple {2002#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2006#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:05,633 INFO L273 TraceCheckUtils]: 16: Hoare triple {2006#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2010#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:05,634 INFO L273 TraceCheckUtils]: 17: Hoare triple {2010#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2014#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:05,635 INFO L273 TraceCheckUtils]: 18: Hoare triple {2014#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2018#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:05,636 INFO L273 TraceCheckUtils]: 19: Hoare triple {2018#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2022#(and (= main_~main__sum~0 78) (<= main_~main__i~0 13) (<= 12 main_~main__n~0))} is VALID [2018-11-14 17:36:05,637 INFO L273 TraceCheckUtils]: 20: Hoare triple {2022#(and (= main_~main__sum~0 78) (<= main_~main__i~0 13) (<= 12 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {2026#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:05,638 INFO L273 TraceCheckUtils]: 21: Hoare triple {2026#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {1949#false} is VALID [2018-11-14 17:36:05,638 INFO L273 TraceCheckUtils]: 22: Hoare triple {1949#false} assume !false; {1949#false} is VALID [2018-11-14 17:36:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:05,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:05,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-11-14 17:36:05,660 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2018-11-14 17:36:05,661 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:05,661 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 16 states. [2018-11-14 17:36:05,686 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:05,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-14 17:36:05,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-14 17:36:05,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-11-14 17:36:05,687 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 16 states. [2018-11-14 17:36:06,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:06,431 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-14 17:36:06,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-14 17:36:06,431 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2018-11-14 17:36:06,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-14 17:36:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 28 transitions. [2018-11-14 17:36:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-14 17:36:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 28 transitions. [2018-11-14 17:36:06,435 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 16 states and 28 transitions. [2018-11-14 17:36:06,484 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:06,486 INFO L225 Difference]: With dead ends: 28 [2018-11-14 17:36:06,486 INFO L226 Difference]: Without dead ends: 25 [2018-11-14 17:36:06,486 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2018-11-14 17:36:06,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-14 17:36:06,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-14 17:36:06,553 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:06,553 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand 25 states. [2018-11-14 17:36:06,553 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand 25 states. [2018-11-14 17:36:06,554 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 25 states. [2018-11-14 17:36:06,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:06,555 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-14 17:36:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-11-14 17:36:06,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:06,556 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:06,556 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand 25 states. [2018-11-14 17:36:06,556 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 25 states. [2018-11-14 17:36:06,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:06,557 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-14 17:36:06,557 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-11-14 17:36:06,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:06,557 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:06,557 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:06,557 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-14 17:36:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-11-14 17:36:06,558 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-11-14 17:36:06,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:06,558 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-11-14 17:36:06,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-14 17:36:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-11-14 17:36:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-14 17:36:06,559 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:06,559 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:06,559 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:06,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:06,560 INFO L82 PathProgramCache]: Analyzing trace with hash 173315856, now seen corresponding path program 13 times [2018-11-14 17:36:06,560 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:06,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:06,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:06,561 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:06,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:06,573 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:06,573 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:06,573 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:06,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:36:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:06,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:07,885 INFO L256 TraceCheckUtils]: 0: Hoare triple {2173#true} call ULTIMATE.init(); {2173#true} is VALID [2018-11-14 17:36:07,885 INFO L273 TraceCheckUtils]: 1: Hoare triple {2173#true} ~__return_main~0 := 0;~__return_60~0 := 0; {2173#true} is VALID [2018-11-14 17:36:07,886 INFO L273 TraceCheckUtils]: 2: Hoare triple {2173#true} assume true; {2173#true} is VALID [2018-11-14 17:36:07,886 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {2173#true} {2173#true} #28#return; {2173#true} is VALID [2018-11-14 17:36:07,886 INFO L256 TraceCheckUtils]: 4: Hoare triple {2173#true} call #t~ret2 := main(); {2173#true} is VALID [2018-11-14 17:36:07,887 INFO L273 TraceCheckUtils]: 5: Hoare triple {2173#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {2173#true} is VALID [2018-11-14 17:36:07,887 INFO L273 TraceCheckUtils]: 6: Hoare triple {2173#true} assume !!(1 <= ~main__n~0); {2173#true} is VALID [2018-11-14 17:36:07,888 INFO L273 TraceCheckUtils]: 7: Hoare triple {2173#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {2199#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:07,889 INFO L273 TraceCheckUtils]: 8: Hoare triple {2199#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2203#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:07,889 INFO L273 TraceCheckUtils]: 9: Hoare triple {2203#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2207#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:07,890 INFO L273 TraceCheckUtils]: 10: Hoare triple {2207#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2211#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:07,891 INFO L273 TraceCheckUtils]: 11: Hoare triple {2211#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2215#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:07,892 INFO L273 TraceCheckUtils]: 12: Hoare triple {2215#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2219#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:07,893 INFO L273 TraceCheckUtils]: 13: Hoare triple {2219#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2223#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:07,894 INFO L273 TraceCheckUtils]: 14: Hoare triple {2223#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2227#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:07,895 INFO L273 TraceCheckUtils]: 15: Hoare triple {2227#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2231#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:07,896 INFO L273 TraceCheckUtils]: 16: Hoare triple {2231#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2235#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:07,897 INFO L273 TraceCheckUtils]: 17: Hoare triple {2235#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2239#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:07,898 INFO L273 TraceCheckUtils]: 18: Hoare triple {2239#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2243#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:07,899 INFO L273 TraceCheckUtils]: 19: Hoare triple {2243#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2247#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:07,900 INFO L273 TraceCheckUtils]: 20: Hoare triple {2247#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2251#(and (<= main_~main__i~0 14) (= main_~main__sum~0 91) (<= 13 main_~main__n~0))} is VALID [2018-11-14 17:36:07,901 INFO L273 TraceCheckUtils]: 21: Hoare triple {2251#(and (<= main_~main__i~0 14) (= main_~main__sum~0 91) (<= 13 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {2255#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:07,902 INFO L273 TraceCheckUtils]: 22: Hoare triple {2255#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {2174#false} is VALID [2018-11-14 17:36:07,902 INFO L273 TraceCheckUtils]: 23: Hoare triple {2174#false} assume !false; {2174#false} is VALID [2018-11-14 17:36:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:07,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:07,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-11-14 17:36:07,937 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 24 [2018-11-14 17:36:07,937 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:07,937 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 17 states. [2018-11-14 17:36:07,959 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:07,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-14 17:36:07,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-14 17:36:07,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-11-14 17:36:07,960 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 17 states. [2018-11-14 17:36:08,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:08,658 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-11-14 17:36:08,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-14 17:36:08,658 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 24 [2018-11-14 17:36:08,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:08,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-14 17:36:08,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 29 transitions. [2018-11-14 17:36:08,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-14 17:36:08,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 29 transitions. [2018-11-14 17:36:08,661 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 17 states and 29 transitions. [2018-11-14 17:36:08,704 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:08,705 INFO L225 Difference]: With dead ends: 29 [2018-11-14 17:36:08,705 INFO L226 Difference]: Without dead ends: 26 [2018-11-14 17:36:08,706 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2018-11-14 17:36:08,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-14 17:36:08,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-14 17:36:08,769 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:08,769 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand 26 states. [2018-11-14 17:36:08,769 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2018-11-14 17:36:08,769 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2018-11-14 17:36:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:08,770 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-11-14 17:36:08,771 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-14 17:36:08,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:08,771 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:08,771 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2018-11-14 17:36:08,771 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2018-11-14 17:36:08,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:08,772 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-11-14 17:36:08,772 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-14 17:36:08,773 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:08,773 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:08,773 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:08,773 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-14 17:36:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-14 17:36:08,774 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-11-14 17:36:08,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:08,774 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-14 17:36:08,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-14 17:36:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-14 17:36:08,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-14 17:36:08,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:08,775 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:08,775 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:08,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:08,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1077761767, now seen corresponding path program 14 times [2018-11-14 17:36:08,776 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:08,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:08,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:08,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:36:08,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:08,788 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:08,789 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:08,789 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:08,804 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-14 17:36:08,825 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-14 17:36:08,825 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:08,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:09,202 INFO L256 TraceCheckUtils]: 0: Hoare triple {2408#true} call ULTIMATE.init(); {2408#true} is VALID [2018-11-14 17:36:09,203 INFO L273 TraceCheckUtils]: 1: Hoare triple {2408#true} ~__return_main~0 := 0;~__return_60~0 := 0; {2408#true} is VALID [2018-11-14 17:36:09,203 INFO L273 TraceCheckUtils]: 2: Hoare triple {2408#true} assume true; {2408#true} is VALID [2018-11-14 17:36:09,203 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {2408#true} {2408#true} #28#return; {2408#true} is VALID [2018-11-14 17:36:09,203 INFO L256 TraceCheckUtils]: 4: Hoare triple {2408#true} call #t~ret2 := main(); {2408#true} is VALID [2018-11-14 17:36:09,203 INFO L273 TraceCheckUtils]: 5: Hoare triple {2408#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {2408#true} is VALID [2018-11-14 17:36:09,203 INFO L273 TraceCheckUtils]: 6: Hoare triple {2408#true} assume !!(1 <= ~main__n~0); {2408#true} is VALID [2018-11-14 17:36:09,205 INFO L273 TraceCheckUtils]: 7: Hoare triple {2408#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {2434#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:09,206 INFO L273 TraceCheckUtils]: 8: Hoare triple {2434#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2438#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:09,210 INFO L273 TraceCheckUtils]: 9: Hoare triple {2438#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2442#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:09,213 INFO L273 TraceCheckUtils]: 10: Hoare triple {2442#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2446#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:09,215 INFO L273 TraceCheckUtils]: 11: Hoare triple {2446#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2450#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:09,216 INFO L273 TraceCheckUtils]: 12: Hoare triple {2450#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2454#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:09,216 INFO L273 TraceCheckUtils]: 13: Hoare triple {2454#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2458#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:09,217 INFO L273 TraceCheckUtils]: 14: Hoare triple {2458#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2462#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:09,217 INFO L273 TraceCheckUtils]: 15: Hoare triple {2462#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2466#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:09,218 INFO L273 TraceCheckUtils]: 16: Hoare triple {2466#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2470#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:09,219 INFO L273 TraceCheckUtils]: 17: Hoare triple {2470#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2474#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:09,220 INFO L273 TraceCheckUtils]: 18: Hoare triple {2474#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2478#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:09,221 INFO L273 TraceCheckUtils]: 19: Hoare triple {2478#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2482#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:09,222 INFO L273 TraceCheckUtils]: 20: Hoare triple {2482#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2486#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:09,223 INFO L273 TraceCheckUtils]: 21: Hoare triple {2486#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2490#(and (<= main_~main__i~0 15) (= main_~main__sum~0 105) (<= 14 main_~main__n~0))} is VALID [2018-11-14 17:36:09,225 INFO L273 TraceCheckUtils]: 22: Hoare triple {2490#(and (<= main_~main__i~0 15) (= main_~main__sum~0 105) (<= 14 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {2494#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:09,226 INFO L273 TraceCheckUtils]: 23: Hoare triple {2494#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {2409#false} is VALID [2018-11-14 17:36:09,226 INFO L273 TraceCheckUtils]: 24: Hoare triple {2409#false} assume !false; {2409#false} is VALID [2018-11-14 17:36:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:09,250 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:09,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-11-14 17:36:09,250 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 25 [2018-11-14 17:36:09,250 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:09,251 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 18 states. [2018-11-14 17:36:09,274 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:09,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-14 17:36:09,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-14 17:36:09,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-11-14 17:36:09,275 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 18 states. [2018-11-14 17:36:10,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:10,238 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-11-14 17:36:10,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-14 17:36:10,239 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 25 [2018-11-14 17:36:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:10,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-14 17:36:10,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 30 transitions. [2018-11-14 17:36:10,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-14 17:36:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 30 transitions. [2018-11-14 17:36:10,241 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 18 states and 30 transitions. [2018-11-14 17:36:10,276 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:10,277 INFO L225 Difference]: With dead ends: 30 [2018-11-14 17:36:10,277 INFO L226 Difference]: Without dead ends: 27 [2018-11-14 17:36:10,278 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2018-11-14 17:36:10,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-14 17:36:10,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-14 17:36:10,352 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:10,353 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand 27 states. [2018-11-14 17:36:10,353 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand 27 states. [2018-11-14 17:36:10,353 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 27 states. [2018-11-14 17:36:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:10,354 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-11-14 17:36:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-14 17:36:10,355 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:10,355 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:10,355 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand 27 states. [2018-11-14 17:36:10,355 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 27 states. [2018-11-14 17:36:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:10,356 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-11-14 17:36:10,356 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-14 17:36:10,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:10,357 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:10,357 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:10,357 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-14 17:36:10,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-14 17:36:10,358 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-11-14 17:36:10,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:10,358 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-14 17:36:10,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-14 17:36:10,359 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-14 17:36:10,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-14 17:36:10,359 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:10,359 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:10,359 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:10,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:10,360 INFO L82 PathProgramCache]: Analyzing trace with hash -949186064, now seen corresponding path program 15 times [2018-11-14 17:36:10,360 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:10,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:10,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:10,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:10,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:10,371 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:10,371 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:10,371 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:10,389 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-14 17:36:10,436 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-14 17:36:10,436 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:10,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:10,940 INFO L256 TraceCheckUtils]: 0: Hoare triple {2653#true} call ULTIMATE.init(); {2653#true} is VALID [2018-11-14 17:36:10,940 INFO L273 TraceCheckUtils]: 1: Hoare triple {2653#true} ~__return_main~0 := 0;~__return_60~0 := 0; {2653#true} is VALID [2018-11-14 17:36:10,940 INFO L273 TraceCheckUtils]: 2: Hoare triple {2653#true} assume true; {2653#true} is VALID [2018-11-14 17:36:10,941 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {2653#true} {2653#true} #28#return; {2653#true} is VALID [2018-11-14 17:36:10,941 INFO L256 TraceCheckUtils]: 4: Hoare triple {2653#true} call #t~ret2 := main(); {2653#true} is VALID [2018-11-14 17:36:10,941 INFO L273 TraceCheckUtils]: 5: Hoare triple {2653#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {2653#true} is VALID [2018-11-14 17:36:10,942 INFO L273 TraceCheckUtils]: 6: Hoare triple {2653#true} assume !!(1 <= ~main__n~0); {2653#true} is VALID [2018-11-14 17:36:10,942 INFO L273 TraceCheckUtils]: 7: Hoare triple {2653#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {2679#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:10,943 INFO L273 TraceCheckUtils]: 8: Hoare triple {2679#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2683#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:10,943 INFO L273 TraceCheckUtils]: 9: Hoare triple {2683#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2687#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:10,944 INFO L273 TraceCheckUtils]: 10: Hoare triple {2687#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2691#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:10,944 INFO L273 TraceCheckUtils]: 11: Hoare triple {2691#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2695#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:10,945 INFO L273 TraceCheckUtils]: 12: Hoare triple {2695#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2699#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:10,945 INFO L273 TraceCheckUtils]: 13: Hoare triple {2699#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2703#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:10,946 INFO L273 TraceCheckUtils]: 14: Hoare triple {2703#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2707#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:10,947 INFO L273 TraceCheckUtils]: 15: Hoare triple {2707#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2711#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:10,948 INFO L273 TraceCheckUtils]: 16: Hoare triple {2711#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2715#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:10,949 INFO L273 TraceCheckUtils]: 17: Hoare triple {2715#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2719#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:10,950 INFO L273 TraceCheckUtils]: 18: Hoare triple {2719#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2723#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:10,951 INFO L273 TraceCheckUtils]: 19: Hoare triple {2723#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2727#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:10,952 INFO L273 TraceCheckUtils]: 20: Hoare triple {2727#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2731#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:10,953 INFO L273 TraceCheckUtils]: 21: Hoare triple {2731#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2735#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:10,954 INFO L273 TraceCheckUtils]: 22: Hoare triple {2735#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2739#(and (<= 15 main_~main__n~0) (<= main_~main__i~0 16) (= main_~main__sum~0 120))} is VALID [2018-11-14 17:36:10,955 INFO L273 TraceCheckUtils]: 23: Hoare triple {2739#(and (<= 15 main_~main__n~0) (<= main_~main__i~0 16) (= main_~main__sum~0 120))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {2743#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:10,956 INFO L273 TraceCheckUtils]: 24: Hoare triple {2743#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {2654#false} is VALID [2018-11-14 17:36:10,956 INFO L273 TraceCheckUtils]: 25: Hoare triple {2654#false} assume !false; {2654#false} is VALID [2018-11-14 17:36:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:10,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:10,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-11-14 17:36:10,980 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 26 [2018-11-14 17:36:10,980 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:10,980 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 19 states. [2018-11-14 17:36:11,003 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:11,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-14 17:36:11,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-14 17:36:11,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-11-14 17:36:11,004 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 19 states. [2018-11-14 17:36:11,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:11,953 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-14 17:36:11,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-14 17:36:11,953 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 26 [2018-11-14 17:36:11,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-14 17:36:11,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2018-11-14 17:36:11,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-14 17:36:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2018-11-14 17:36:11,956 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 19 states and 31 transitions. [2018-11-14 17:36:11,986 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:11,986 INFO L225 Difference]: With dead ends: 31 [2018-11-14 17:36:11,987 INFO L226 Difference]: Without dead ends: 28 [2018-11-14 17:36:11,988 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2018-11-14 17:36:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-14 17:36:12,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-14 17:36:12,035 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:12,035 INFO L82 GeneralOperation]: Start isEquivalent. First operand 28 states. Second operand 28 states. [2018-11-14 17:36:12,035 INFO L74 IsIncluded]: Start isIncluded. First operand 28 states. Second operand 28 states. [2018-11-14 17:36:12,035 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 28 states. [2018-11-14 17:36:12,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:12,036 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-14 17:36:12,037 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-11-14 17:36:12,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:12,037 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:12,037 INFO L74 IsIncluded]: Start isIncluded. First operand 28 states. Second operand 28 states. [2018-11-14 17:36:12,037 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 28 states. [2018-11-14 17:36:12,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:12,038 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-14 17:36:12,038 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-11-14 17:36:12,038 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:12,039 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:12,039 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:12,039 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-14 17:36:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-11-14 17:36:12,040 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-11-14 17:36:12,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:12,040 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-11-14 17:36:12,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-14 17:36:12,040 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-11-14 17:36:12,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-14 17:36:12,041 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:12,041 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:12,041 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:12,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:12,042 INFO L82 PathProgramCache]: Analyzing trace with hash 639940615, now seen corresponding path program 16 times [2018-11-14 17:36:12,042 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:12,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:12,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:12,043 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:12,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:12,053 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:12,053 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:12,053 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:12,067 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-14 17:36:12,186 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-14 17:36:12,187 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:12,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:12,568 INFO L256 TraceCheckUtils]: 0: Hoare triple {2908#true} call ULTIMATE.init(); {2908#true} is VALID [2018-11-14 17:36:12,569 INFO L273 TraceCheckUtils]: 1: Hoare triple {2908#true} ~__return_main~0 := 0;~__return_60~0 := 0; {2908#true} is VALID [2018-11-14 17:36:12,569 INFO L273 TraceCheckUtils]: 2: Hoare triple {2908#true} assume true; {2908#true} is VALID [2018-11-14 17:36:12,569 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {2908#true} {2908#true} #28#return; {2908#true} is VALID [2018-11-14 17:36:12,570 INFO L256 TraceCheckUtils]: 4: Hoare triple {2908#true} call #t~ret2 := main(); {2908#true} is VALID [2018-11-14 17:36:12,570 INFO L273 TraceCheckUtils]: 5: Hoare triple {2908#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {2908#true} is VALID [2018-11-14 17:36:12,570 INFO L273 TraceCheckUtils]: 6: Hoare triple {2908#true} assume !!(1 <= ~main__n~0); {2908#true} is VALID [2018-11-14 17:36:12,571 INFO L273 TraceCheckUtils]: 7: Hoare triple {2908#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {2934#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:12,571 INFO L273 TraceCheckUtils]: 8: Hoare triple {2934#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2938#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:12,572 INFO L273 TraceCheckUtils]: 9: Hoare triple {2938#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2942#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:12,573 INFO L273 TraceCheckUtils]: 10: Hoare triple {2942#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2946#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:12,575 INFO L273 TraceCheckUtils]: 11: Hoare triple {2946#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2950#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:12,576 INFO L273 TraceCheckUtils]: 12: Hoare triple {2950#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2954#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:12,582 INFO L273 TraceCheckUtils]: 13: Hoare triple {2954#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2958#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:12,583 INFO L273 TraceCheckUtils]: 14: Hoare triple {2958#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2962#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:12,583 INFO L273 TraceCheckUtils]: 15: Hoare triple {2962#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2966#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:12,584 INFO L273 TraceCheckUtils]: 16: Hoare triple {2966#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2970#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:12,584 INFO L273 TraceCheckUtils]: 17: Hoare triple {2970#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2974#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:12,585 INFO L273 TraceCheckUtils]: 18: Hoare triple {2974#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2978#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:12,586 INFO L273 TraceCheckUtils]: 19: Hoare triple {2978#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2982#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:12,586 INFO L273 TraceCheckUtils]: 20: Hoare triple {2982#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2986#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:12,587 INFO L273 TraceCheckUtils]: 21: Hoare triple {2986#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2990#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:12,588 INFO L273 TraceCheckUtils]: 22: Hoare triple {2990#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2994#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:12,589 INFO L273 TraceCheckUtils]: 23: Hoare triple {2994#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {2998#(and (= main_~main__sum~0 136) (<= 16 main_~main__n~0) (<= main_~main__i~0 17))} is VALID [2018-11-14 17:36:12,590 INFO L273 TraceCheckUtils]: 24: Hoare triple {2998#(and (= main_~main__sum~0 136) (<= 16 main_~main__n~0) (<= main_~main__i~0 17))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {3002#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:12,591 INFO L273 TraceCheckUtils]: 25: Hoare triple {3002#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {2909#false} is VALID [2018-11-14 17:36:12,591 INFO L273 TraceCheckUtils]: 26: Hoare triple {2909#false} assume !false; {2909#false} is VALID [2018-11-14 17:36:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:12,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:12,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-11-14 17:36:12,623 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2018-11-14 17:36:12,623 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:12,623 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 20 states. [2018-11-14 17:36:12,648 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:12,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-14 17:36:12,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-14 17:36:12,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-11-14 17:36:12,649 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 20 states. [2018-11-14 17:36:13,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:13,684 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-11-14 17:36:13,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-14 17:36:13,684 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2018-11-14 17:36:13,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-14 17:36:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 32 transitions. [2018-11-14 17:36:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-14 17:36:13,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 32 transitions. [2018-11-14 17:36:13,687 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 20 states and 32 transitions. [2018-11-14 17:36:13,721 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:13,722 INFO L225 Difference]: With dead ends: 32 [2018-11-14 17:36:13,722 INFO L226 Difference]: Without dead ends: 29 [2018-11-14 17:36:13,723 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2018-11-14 17:36:13,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-14 17:36:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-14 17:36:13,787 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:13,788 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand 29 states. [2018-11-14 17:36:13,788 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand 29 states. [2018-11-14 17:36:13,788 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 29 states. [2018-11-14 17:36:13,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:13,789 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-11-14 17:36:13,789 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-14 17:36:13,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:13,790 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:13,790 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand 29 states. [2018-11-14 17:36:13,790 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 29 states. [2018-11-14 17:36:13,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:13,791 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-11-14 17:36:13,791 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-14 17:36:13,791 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:13,791 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:13,791 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:13,791 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:13,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-14 17:36:13,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-11-14 17:36:13,792 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-11-14 17:36:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:13,793 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-11-14 17:36:13,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-14 17:36:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-14 17:36:13,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-14 17:36:13,793 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:13,793 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:13,794 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:13,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:13,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1636739888, now seen corresponding path program 17 times [2018-11-14 17:36:13,794 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:13,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:13,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:13,795 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:13,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:13,806 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:13,806 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:13,806 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:13,829 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-14 17:36:13,856 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-11-14 17:36:13,857 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:13,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:14,409 INFO L256 TraceCheckUtils]: 0: Hoare triple {3173#true} call ULTIMATE.init(); {3173#true} is VALID [2018-11-14 17:36:14,409 INFO L273 TraceCheckUtils]: 1: Hoare triple {3173#true} ~__return_main~0 := 0;~__return_60~0 := 0; {3173#true} is VALID [2018-11-14 17:36:14,409 INFO L273 TraceCheckUtils]: 2: Hoare triple {3173#true} assume true; {3173#true} is VALID [2018-11-14 17:36:14,410 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {3173#true} {3173#true} #28#return; {3173#true} is VALID [2018-11-14 17:36:14,410 INFO L256 TraceCheckUtils]: 4: Hoare triple {3173#true} call #t~ret2 := main(); {3173#true} is VALID [2018-11-14 17:36:14,410 INFO L273 TraceCheckUtils]: 5: Hoare triple {3173#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {3173#true} is VALID [2018-11-14 17:36:14,411 INFO L273 TraceCheckUtils]: 6: Hoare triple {3173#true} assume !!(1 <= ~main__n~0); {3173#true} is VALID [2018-11-14 17:36:14,412 INFO L273 TraceCheckUtils]: 7: Hoare triple {3173#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {3199#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:14,412 INFO L273 TraceCheckUtils]: 8: Hoare triple {3199#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3203#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:14,413 INFO L273 TraceCheckUtils]: 9: Hoare triple {3203#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3207#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:14,414 INFO L273 TraceCheckUtils]: 10: Hoare triple {3207#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3211#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:14,414 INFO L273 TraceCheckUtils]: 11: Hoare triple {3211#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3215#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:14,415 INFO L273 TraceCheckUtils]: 12: Hoare triple {3215#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3219#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:14,416 INFO L273 TraceCheckUtils]: 13: Hoare triple {3219#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3223#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:14,417 INFO L273 TraceCheckUtils]: 14: Hoare triple {3223#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3227#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:14,418 INFO L273 TraceCheckUtils]: 15: Hoare triple {3227#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3231#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:14,419 INFO L273 TraceCheckUtils]: 16: Hoare triple {3231#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3235#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:14,420 INFO L273 TraceCheckUtils]: 17: Hoare triple {3235#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3239#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:14,422 INFO L273 TraceCheckUtils]: 18: Hoare triple {3239#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3243#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:14,423 INFO L273 TraceCheckUtils]: 19: Hoare triple {3243#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3247#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:14,424 INFO L273 TraceCheckUtils]: 20: Hoare triple {3247#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3251#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:14,425 INFO L273 TraceCheckUtils]: 21: Hoare triple {3251#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3255#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:14,426 INFO L273 TraceCheckUtils]: 22: Hoare triple {3255#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3259#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:14,427 INFO L273 TraceCheckUtils]: 23: Hoare triple {3259#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3263#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:14,428 INFO L273 TraceCheckUtils]: 24: Hoare triple {3263#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3267#(and (<= main_~main__i~0 18) (= main_~main__sum~0 153) (<= 17 main_~main__n~0))} is VALID [2018-11-14 17:36:14,434 INFO L273 TraceCheckUtils]: 25: Hoare triple {3267#(and (<= main_~main__i~0 18) (= main_~main__sum~0 153) (<= 17 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {3271#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:14,435 INFO L273 TraceCheckUtils]: 26: Hoare triple {3271#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {3174#false} is VALID [2018-11-14 17:36:14,435 INFO L273 TraceCheckUtils]: 27: Hoare triple {3174#false} assume !false; {3174#false} is VALID [2018-11-14 17:36:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:14,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:14,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-11-14 17:36:14,459 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 28 [2018-11-14 17:36:14,459 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:14,459 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 21 states. [2018-11-14 17:36:14,489 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:14,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-14 17:36:14,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-14 17:36:14,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-11-14 17:36:14,491 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 21 states. [2018-11-14 17:36:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:15,717 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-11-14 17:36:15,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-14 17:36:15,718 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 28 [2018-11-14 17:36:15,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:15,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-14 17:36:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 33 transitions. [2018-11-14 17:36:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-14 17:36:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 33 transitions. [2018-11-14 17:36:15,721 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 21 states and 33 transitions. [2018-11-14 17:36:15,750 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:15,750 INFO L225 Difference]: With dead ends: 33 [2018-11-14 17:36:15,751 INFO L226 Difference]: Without dead ends: 30 [2018-11-14 17:36:15,751 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2018-11-14 17:36:15,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-14 17:36:15,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-14 17:36:15,804 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:15,804 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand 30 states. [2018-11-14 17:36:15,805 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 30 states. [2018-11-14 17:36:15,805 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 30 states. [2018-11-14 17:36:15,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:15,806 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-11-14 17:36:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-11-14 17:36:15,806 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:15,807 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:15,807 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 30 states. [2018-11-14 17:36:15,807 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 30 states. [2018-11-14 17:36:15,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:15,808 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-11-14 17:36:15,808 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-11-14 17:36:15,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:15,808 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:15,808 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:15,808 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-14 17:36:15,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-11-14 17:36:15,809 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-11-14 17:36:15,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:15,809 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-11-14 17:36:15,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-14 17:36:15,809 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-11-14 17:36:15,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-14 17:36:15,810 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:15,810 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:15,810 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:15,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:15,810 INFO L82 PathProgramCache]: Analyzing trace with hash 800608551, now seen corresponding path program 18 times [2018-11-14 17:36:15,810 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:15,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:15,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:15,811 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:15,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:15,822 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:15,822 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:15,822 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:15,841 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-14 17:36:15,879 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-11-14 17:36:15,880 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:15,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:16,359 INFO L256 TraceCheckUtils]: 0: Hoare triple {3448#true} call ULTIMATE.init(); {3448#true} is VALID [2018-11-14 17:36:16,359 INFO L273 TraceCheckUtils]: 1: Hoare triple {3448#true} ~__return_main~0 := 0;~__return_60~0 := 0; {3448#true} is VALID [2018-11-14 17:36:16,359 INFO L273 TraceCheckUtils]: 2: Hoare triple {3448#true} assume true; {3448#true} is VALID [2018-11-14 17:36:16,359 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {3448#true} {3448#true} #28#return; {3448#true} is VALID [2018-11-14 17:36:16,360 INFO L256 TraceCheckUtils]: 4: Hoare triple {3448#true} call #t~ret2 := main(); {3448#true} is VALID [2018-11-14 17:36:16,360 INFO L273 TraceCheckUtils]: 5: Hoare triple {3448#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {3448#true} is VALID [2018-11-14 17:36:16,360 INFO L273 TraceCheckUtils]: 6: Hoare triple {3448#true} assume !!(1 <= ~main__n~0); {3448#true} is VALID [2018-11-14 17:36:16,361 INFO L273 TraceCheckUtils]: 7: Hoare triple {3448#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {3474#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:16,362 INFO L273 TraceCheckUtils]: 8: Hoare triple {3474#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3478#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:16,362 INFO L273 TraceCheckUtils]: 9: Hoare triple {3478#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3482#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:16,363 INFO L273 TraceCheckUtils]: 10: Hoare triple {3482#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3486#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:16,363 INFO L273 TraceCheckUtils]: 11: Hoare triple {3486#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3490#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:16,364 INFO L273 TraceCheckUtils]: 12: Hoare triple {3490#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3494#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:16,365 INFO L273 TraceCheckUtils]: 13: Hoare triple {3494#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3498#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:16,366 INFO L273 TraceCheckUtils]: 14: Hoare triple {3498#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3502#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:16,367 INFO L273 TraceCheckUtils]: 15: Hoare triple {3502#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3506#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:16,368 INFO L273 TraceCheckUtils]: 16: Hoare triple {3506#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3510#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:16,368 INFO L273 TraceCheckUtils]: 17: Hoare triple {3510#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3514#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:16,369 INFO L273 TraceCheckUtils]: 18: Hoare triple {3514#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3518#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:16,370 INFO L273 TraceCheckUtils]: 19: Hoare triple {3518#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3522#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:16,371 INFO L273 TraceCheckUtils]: 20: Hoare triple {3522#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3526#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:16,372 INFO L273 TraceCheckUtils]: 21: Hoare triple {3526#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3530#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:16,373 INFO L273 TraceCheckUtils]: 22: Hoare triple {3530#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3534#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:16,374 INFO L273 TraceCheckUtils]: 23: Hoare triple {3534#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3538#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:16,375 INFO L273 TraceCheckUtils]: 24: Hoare triple {3538#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3542#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:36:16,376 INFO L273 TraceCheckUtils]: 25: Hoare triple {3542#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3546#(and (<= main_~main__i~0 19) (<= 18 main_~main__n~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:36:16,377 INFO L273 TraceCheckUtils]: 26: Hoare triple {3546#(and (<= main_~main__i~0 19) (<= 18 main_~main__n~0) (= main_~main__sum~0 171))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {3550#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:16,378 INFO L273 TraceCheckUtils]: 27: Hoare triple {3550#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {3449#false} is VALID [2018-11-14 17:36:16,378 INFO L273 TraceCheckUtils]: 28: Hoare triple {3449#false} assume !false; {3449#false} is VALID [2018-11-14 17:36:16,381 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:16,401 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:16,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-11-14 17:36:16,401 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 29 [2018-11-14 17:36:16,402 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:16,402 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 22 states. [2018-11-14 17:36:16,429 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:16,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-14 17:36:16,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-14 17:36:16,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-11-14 17:36:16,430 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 22 states. [2018-11-14 17:36:18,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:18,069 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-14 17:36:18,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-14 17:36:18,070 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 29 [2018-11-14 17:36:18,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-14 17:36:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 34 transitions. [2018-11-14 17:36:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-14 17:36:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 34 transitions. [2018-11-14 17:36:18,073 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 22 states and 34 transitions. [2018-11-14 17:36:18,103 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:18,104 INFO L225 Difference]: With dead ends: 34 [2018-11-14 17:36:18,104 INFO L226 Difference]: Without dead ends: 31 [2018-11-14 17:36:18,105 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2018-11-14 17:36:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-14 17:36:18,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-14 17:36:18,193 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:18,193 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand 31 states. [2018-11-14 17:36:18,193 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 31 states. [2018-11-14 17:36:18,193 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 31 states. [2018-11-14 17:36:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:18,194 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-14 17:36:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-11-14 17:36:18,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:18,195 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:18,195 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 31 states. [2018-11-14 17:36:18,195 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 31 states. [2018-11-14 17:36:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:18,196 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-14 17:36:18,196 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-11-14 17:36:18,196 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:18,196 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:18,196 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:18,197 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:18,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-14 17:36:18,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-11-14 17:36:18,198 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-11-14 17:36:18,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:18,198 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-11-14 17:36:18,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-14 17:36:18,198 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-11-14 17:36:18,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-14 17:36:18,198 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:18,199 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:18,199 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:18,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:18,199 INFO L82 PathProgramCache]: Analyzing trace with hash -951001168, now seen corresponding path program 19 times [2018-11-14 17:36:18,199 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:18,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:18,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:18,200 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:18,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:18,211 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:18,211 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:18,211 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:18,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:36:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:18,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:19,084 INFO L256 TraceCheckUtils]: 0: Hoare triple {3733#true} call ULTIMATE.init(); {3733#true} is VALID [2018-11-14 17:36:19,084 INFO L273 TraceCheckUtils]: 1: Hoare triple {3733#true} ~__return_main~0 := 0;~__return_60~0 := 0; {3733#true} is VALID [2018-11-14 17:36:19,084 INFO L273 TraceCheckUtils]: 2: Hoare triple {3733#true} assume true; {3733#true} is VALID [2018-11-14 17:36:19,085 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {3733#true} {3733#true} #28#return; {3733#true} is VALID [2018-11-14 17:36:19,085 INFO L256 TraceCheckUtils]: 4: Hoare triple {3733#true} call #t~ret2 := main(); {3733#true} is VALID [2018-11-14 17:36:19,085 INFO L273 TraceCheckUtils]: 5: Hoare triple {3733#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {3733#true} is VALID [2018-11-14 17:36:19,086 INFO L273 TraceCheckUtils]: 6: Hoare triple {3733#true} assume !!(1 <= ~main__n~0); {3733#true} is VALID [2018-11-14 17:36:19,088 INFO L273 TraceCheckUtils]: 7: Hoare triple {3733#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {3759#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:19,089 INFO L273 TraceCheckUtils]: 8: Hoare triple {3759#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3763#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:19,090 INFO L273 TraceCheckUtils]: 9: Hoare triple {3763#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3767#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:19,090 INFO L273 TraceCheckUtils]: 10: Hoare triple {3767#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3771#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:19,091 INFO L273 TraceCheckUtils]: 11: Hoare triple {3771#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3775#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:19,091 INFO L273 TraceCheckUtils]: 12: Hoare triple {3775#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3779#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:19,092 INFO L273 TraceCheckUtils]: 13: Hoare triple {3779#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3783#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:19,093 INFO L273 TraceCheckUtils]: 14: Hoare triple {3783#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3787#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:19,094 INFO L273 TraceCheckUtils]: 15: Hoare triple {3787#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3791#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:19,095 INFO L273 TraceCheckUtils]: 16: Hoare triple {3791#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3795#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:19,096 INFO L273 TraceCheckUtils]: 17: Hoare triple {3795#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3799#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:19,097 INFO L273 TraceCheckUtils]: 18: Hoare triple {3799#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3803#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:19,098 INFO L273 TraceCheckUtils]: 19: Hoare triple {3803#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3807#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:19,099 INFO L273 TraceCheckUtils]: 20: Hoare triple {3807#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3811#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:19,100 INFO L273 TraceCheckUtils]: 21: Hoare triple {3811#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3815#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:19,101 INFO L273 TraceCheckUtils]: 22: Hoare triple {3815#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3819#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:19,102 INFO L273 TraceCheckUtils]: 23: Hoare triple {3819#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3823#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:19,103 INFO L273 TraceCheckUtils]: 24: Hoare triple {3823#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3827#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:36:19,104 INFO L273 TraceCheckUtils]: 25: Hoare triple {3827#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3831#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:36:19,105 INFO L273 TraceCheckUtils]: 26: Hoare triple {3831#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {3835#(and (<= main_~main__i~0 20) (= main_~main__sum~0 190) (<= 19 main_~main__n~0))} is VALID [2018-11-14 17:36:19,106 INFO L273 TraceCheckUtils]: 27: Hoare triple {3835#(and (<= main_~main__i~0 20) (= main_~main__sum~0 190) (<= 19 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {3839#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:19,107 INFO L273 TraceCheckUtils]: 28: Hoare triple {3839#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {3734#false} is VALID [2018-11-14 17:36:19,107 INFO L273 TraceCheckUtils]: 29: Hoare triple {3734#false} assume !false; {3734#false} is VALID [2018-11-14 17:36:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:19,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:19,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-11-14 17:36:19,131 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 30 [2018-11-14 17:36:19,132 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:19,132 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 23 states. [2018-11-14 17:36:19,159 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:19,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-14 17:36:19,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-14 17:36:19,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-11-14 17:36:19,161 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 23 states. [2018-11-14 17:36:20,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:20,984 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-11-14 17:36:20,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-14 17:36:20,984 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 30 [2018-11-14 17:36:20,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-14 17:36:20,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2018-11-14 17:36:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-14 17:36:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2018-11-14 17:36:20,987 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 23 states and 35 transitions. [2018-11-14 17:36:21,018 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:21,019 INFO L225 Difference]: With dead ends: 35 [2018-11-14 17:36:21,019 INFO L226 Difference]: Without dead ends: 32 [2018-11-14 17:36:21,019 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2018-11-14 17:36:21,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-14 17:36:21,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-14 17:36:21,093 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:21,093 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand 32 states. [2018-11-14 17:36:21,093 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 32 states. [2018-11-14 17:36:21,093 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 32 states. [2018-11-14 17:36:21,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:21,094 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-11-14 17:36:21,094 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-11-14 17:36:21,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:21,094 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:21,095 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 32 states. [2018-11-14 17:36:21,095 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 32 states. [2018-11-14 17:36:21,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:21,095 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-11-14 17:36:21,096 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-11-14 17:36:21,096 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:21,096 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:21,096 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:21,096 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-14 17:36:21,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-11-14 17:36:21,097 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-11-14 17:36:21,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:21,098 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-11-14 17:36:21,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-14 17:36:21,098 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-11-14 17:36:21,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-14 17:36:21,098 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:21,098 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:21,099 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:21,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:21,099 INFO L82 PathProgramCache]: Analyzing trace with hash 583672391, now seen corresponding path program 20 times [2018-11-14 17:36:21,099 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:21,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:21,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:21,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:36:21,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:21,110 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:21,110 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:21,110 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:21,131 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-14 17:36:21,159 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-14 17:36:21,159 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:21,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:21,802 INFO L256 TraceCheckUtils]: 0: Hoare triple {4028#true} call ULTIMATE.init(); {4028#true} is VALID [2018-11-14 17:36:21,802 INFO L273 TraceCheckUtils]: 1: Hoare triple {4028#true} ~__return_main~0 := 0;~__return_60~0 := 0; {4028#true} is VALID [2018-11-14 17:36:21,802 INFO L273 TraceCheckUtils]: 2: Hoare triple {4028#true} assume true; {4028#true} is VALID [2018-11-14 17:36:21,802 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {4028#true} {4028#true} #28#return; {4028#true} is VALID [2018-11-14 17:36:21,803 INFO L256 TraceCheckUtils]: 4: Hoare triple {4028#true} call #t~ret2 := main(); {4028#true} is VALID [2018-11-14 17:36:21,803 INFO L273 TraceCheckUtils]: 5: Hoare triple {4028#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {4028#true} is VALID [2018-11-14 17:36:21,803 INFO L273 TraceCheckUtils]: 6: Hoare triple {4028#true} assume !!(1 <= ~main__n~0); {4028#true} is VALID [2018-11-14 17:36:21,803 INFO L273 TraceCheckUtils]: 7: Hoare triple {4028#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {4054#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:21,804 INFO L273 TraceCheckUtils]: 8: Hoare triple {4054#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4058#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:36:21,805 INFO L273 TraceCheckUtils]: 9: Hoare triple {4058#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4062#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:21,806 INFO L273 TraceCheckUtils]: 10: Hoare triple {4062#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4066#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:21,806 INFO L273 TraceCheckUtils]: 11: Hoare triple {4066#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4070#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:21,807 INFO L273 TraceCheckUtils]: 12: Hoare triple {4070#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4074#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:21,807 INFO L273 TraceCheckUtils]: 13: Hoare triple {4074#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4078#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:21,808 INFO L273 TraceCheckUtils]: 14: Hoare triple {4078#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4082#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:21,809 INFO L273 TraceCheckUtils]: 15: Hoare triple {4082#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4086#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:21,810 INFO L273 TraceCheckUtils]: 16: Hoare triple {4086#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4090#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:21,811 INFO L273 TraceCheckUtils]: 17: Hoare triple {4090#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4094#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:21,812 INFO L273 TraceCheckUtils]: 18: Hoare triple {4094#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4098#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:21,813 INFO L273 TraceCheckUtils]: 19: Hoare triple {4098#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4102#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:21,814 INFO L273 TraceCheckUtils]: 20: Hoare triple {4102#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4106#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:21,815 INFO L273 TraceCheckUtils]: 21: Hoare triple {4106#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4110#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:21,816 INFO L273 TraceCheckUtils]: 22: Hoare triple {4110#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4114#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:21,816 INFO L273 TraceCheckUtils]: 23: Hoare triple {4114#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4118#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:21,817 INFO L273 TraceCheckUtils]: 24: Hoare triple {4118#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4122#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:36:21,818 INFO L273 TraceCheckUtils]: 25: Hoare triple {4122#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4126#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:36:21,819 INFO L273 TraceCheckUtils]: 26: Hoare triple {4126#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4130#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:36:21,821 INFO L273 TraceCheckUtils]: 27: Hoare triple {4130#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4134#(and (<= 20 main_~main__n~0) (<= main_~main__i~0 21) (= main_~main__sum~0 210))} is VALID [2018-11-14 17:36:21,823 INFO L273 TraceCheckUtils]: 28: Hoare triple {4134#(and (<= 20 main_~main__n~0) (<= main_~main__i~0 21) (= main_~main__sum~0 210))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {4138#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:21,823 INFO L273 TraceCheckUtils]: 29: Hoare triple {4138#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {4029#false} is VALID [2018-11-14 17:36:21,824 INFO L273 TraceCheckUtils]: 30: Hoare triple {4029#false} assume !false; {4029#false} is VALID [2018-11-14 17:36:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:21,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:21,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-11-14 17:36:21,849 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 31 [2018-11-14 17:36:21,849 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:21,849 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 24 states. [2018-11-14 17:36:21,877 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:21,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-14 17:36:21,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-14 17:36:21,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-11-14 17:36:21,878 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 24 states. [2018-11-14 17:36:23,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:23,443 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-11-14 17:36:23,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-14 17:36:23,443 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 31 [2018-11-14 17:36:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-14 17:36:23,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 36 transitions. [2018-11-14 17:36:23,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-14 17:36:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 36 transitions. [2018-11-14 17:36:23,446 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 24 states and 36 transitions. [2018-11-14 17:36:23,899 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:23,899 INFO L225 Difference]: With dead ends: 36 [2018-11-14 17:36:23,900 INFO L226 Difference]: Without dead ends: 33 [2018-11-14 17:36:23,900 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2018-11-14 17:36:23,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-14 17:36:23,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-14 17:36:23,989 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:23,989 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second operand 33 states. [2018-11-14 17:36:23,990 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand 33 states. [2018-11-14 17:36:23,990 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 33 states. [2018-11-14 17:36:23,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:23,991 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-11-14 17:36:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-11-14 17:36:23,991 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:23,991 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:23,991 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand 33 states. [2018-11-14 17:36:23,991 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 33 states. [2018-11-14 17:36:23,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:23,992 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-11-14 17:36:23,992 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-11-14 17:36:23,992 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:23,992 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:23,992 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:23,993 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-14 17:36:23,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-11-14 17:36:23,993 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-11-14 17:36:23,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:23,994 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-11-14 17:36:23,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-14 17:36:23,994 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-11-14 17:36:23,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-14 17:36:23,994 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:23,994 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:23,994 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:23,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:23,995 INFO L82 PathProgramCache]: Analyzing trace with hash 913912464, now seen corresponding path program 21 times [2018-11-14 17:36:23,995 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:23,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:23,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:23,996 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:23,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:24,005 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:24,005 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:24,005 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:24,023 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-14 17:36:24,148 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-11-14 17:36:24,149 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:24,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:24,683 INFO L256 TraceCheckUtils]: 0: Hoare triple {4333#true} call ULTIMATE.init(); {4333#true} is VALID [2018-11-14 17:36:24,683 INFO L273 TraceCheckUtils]: 1: Hoare triple {4333#true} ~__return_main~0 := 0;~__return_60~0 := 0; {4333#true} is VALID [2018-11-14 17:36:24,683 INFO L273 TraceCheckUtils]: 2: Hoare triple {4333#true} assume true; {4333#true} is VALID [2018-11-14 17:36:24,683 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {4333#true} {4333#true} #28#return; {4333#true} is VALID [2018-11-14 17:36:24,684 INFO L256 TraceCheckUtils]: 4: Hoare triple {4333#true} call #t~ret2 := main(); {4333#true} is VALID [2018-11-14 17:36:24,684 INFO L273 TraceCheckUtils]: 5: Hoare triple {4333#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {4333#true} is VALID [2018-11-14 17:36:24,684 INFO L273 TraceCheckUtils]: 6: Hoare triple {4333#true} assume !!(1 <= ~main__n~0); {4333#true} is VALID [2018-11-14 17:36:24,685 INFO L273 TraceCheckUtils]: 7: Hoare triple {4333#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {4359#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:24,685 INFO L273 TraceCheckUtils]: 8: Hoare triple {4359#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4363#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:36:24,686 INFO L273 TraceCheckUtils]: 9: Hoare triple {4363#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4367#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:24,687 INFO L273 TraceCheckUtils]: 10: Hoare triple {4367#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4371#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:24,687 INFO L273 TraceCheckUtils]: 11: Hoare triple {4371#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4375#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:24,688 INFO L273 TraceCheckUtils]: 12: Hoare triple {4375#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4379#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:24,689 INFO L273 TraceCheckUtils]: 13: Hoare triple {4379#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4383#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:24,690 INFO L273 TraceCheckUtils]: 14: Hoare triple {4383#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4387#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:24,691 INFO L273 TraceCheckUtils]: 15: Hoare triple {4387#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4391#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:24,692 INFO L273 TraceCheckUtils]: 16: Hoare triple {4391#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4395#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:24,693 INFO L273 TraceCheckUtils]: 17: Hoare triple {4395#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4399#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:24,694 INFO L273 TraceCheckUtils]: 18: Hoare triple {4399#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4403#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:24,695 INFO L273 TraceCheckUtils]: 19: Hoare triple {4403#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4407#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:24,695 INFO L273 TraceCheckUtils]: 20: Hoare triple {4407#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4411#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:24,696 INFO L273 TraceCheckUtils]: 21: Hoare triple {4411#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4415#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:24,697 INFO L273 TraceCheckUtils]: 22: Hoare triple {4415#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4419#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:24,698 INFO L273 TraceCheckUtils]: 23: Hoare triple {4419#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4423#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:24,699 INFO L273 TraceCheckUtils]: 24: Hoare triple {4423#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4427#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:36:24,700 INFO L273 TraceCheckUtils]: 25: Hoare triple {4427#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4431#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:36:24,701 INFO L273 TraceCheckUtils]: 26: Hoare triple {4431#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4435#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:36:24,702 INFO L273 TraceCheckUtils]: 27: Hoare triple {4435#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4439#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:36:24,703 INFO L273 TraceCheckUtils]: 28: Hoare triple {4439#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4443#(and (<= 21 main_~main__n~0) (= main_~main__sum~0 231) (<= main_~main__i~0 22))} is VALID [2018-11-14 17:36:24,704 INFO L273 TraceCheckUtils]: 29: Hoare triple {4443#(and (<= 21 main_~main__n~0) (= main_~main__sum~0 231) (<= main_~main__i~0 22))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {4447#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:24,705 INFO L273 TraceCheckUtils]: 30: Hoare triple {4447#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {4334#false} is VALID [2018-11-14 17:36:24,705 INFO L273 TraceCheckUtils]: 31: Hoare triple {4334#false} assume !false; {4334#false} is VALID [2018-11-14 17:36:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:24,728 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:24,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-11-14 17:36:24,728 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 32 [2018-11-14 17:36:24,729 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:24,729 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 25 states. [2018-11-14 17:36:24,756 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:24,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-14 17:36:24,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-14 17:36:24,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-11-14 17:36:24,758 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 25 states. [2018-11-14 17:36:26,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:26,455 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-11-14 17:36:26,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-14 17:36:26,455 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 32 [2018-11-14 17:36:26,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:26,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-14 17:36:26,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 37 transitions. [2018-11-14 17:36:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-14 17:36:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 37 transitions. [2018-11-14 17:36:26,457 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 25 states and 37 transitions. [2018-11-14 17:36:26,932 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:26,933 INFO L225 Difference]: With dead ends: 37 [2018-11-14 17:36:26,933 INFO L226 Difference]: Without dead ends: 34 [2018-11-14 17:36:26,934 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2018-11-14 17:36:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-14 17:36:27,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-14 17:36:27,021 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:27,022 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand 34 states. [2018-11-14 17:36:27,022 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand 34 states. [2018-11-14 17:36:27,022 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 34 states. [2018-11-14 17:36:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:27,023 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-14 17:36:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-11-14 17:36:27,023 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:27,023 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:27,023 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand 34 states. [2018-11-14 17:36:27,023 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 34 states. [2018-11-14 17:36:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:27,024 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-14 17:36:27,024 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-11-14 17:36:27,024 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:27,024 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:27,024 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:27,024 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:27,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-14 17:36:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-11-14 17:36:27,025 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-11-14 17:36:27,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:27,025 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-11-14 17:36:27,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-14 17:36:27,025 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-11-14 17:36:27,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-14 17:36:27,026 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:27,026 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:27,026 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:27,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:27,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1733547161, now seen corresponding path program 22 times [2018-11-14 17:36:27,026 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:27,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:27,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:27,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:27,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:27,036 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:27,036 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:27,036 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:27,061 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-14 17:36:27,270 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-14 17:36:27,270 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:27,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:28,044 INFO L256 TraceCheckUtils]: 0: Hoare triple {4648#true} call ULTIMATE.init(); {4648#true} is VALID [2018-11-14 17:36:28,044 INFO L273 TraceCheckUtils]: 1: Hoare triple {4648#true} ~__return_main~0 := 0;~__return_60~0 := 0; {4648#true} is VALID [2018-11-14 17:36:28,044 INFO L273 TraceCheckUtils]: 2: Hoare triple {4648#true} assume true; {4648#true} is VALID [2018-11-14 17:36:28,045 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {4648#true} {4648#true} #28#return; {4648#true} is VALID [2018-11-14 17:36:28,045 INFO L256 TraceCheckUtils]: 4: Hoare triple {4648#true} call #t~ret2 := main(); {4648#true} is VALID [2018-11-14 17:36:28,045 INFO L273 TraceCheckUtils]: 5: Hoare triple {4648#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {4648#true} is VALID [2018-11-14 17:36:28,045 INFO L273 TraceCheckUtils]: 6: Hoare triple {4648#true} assume !!(1 <= ~main__n~0); {4648#true} is VALID [2018-11-14 17:36:28,046 INFO L273 TraceCheckUtils]: 7: Hoare triple {4648#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {4674#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:28,047 INFO L273 TraceCheckUtils]: 8: Hoare triple {4674#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4678#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:36:28,048 INFO L273 TraceCheckUtils]: 9: Hoare triple {4678#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4682#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:28,048 INFO L273 TraceCheckUtils]: 10: Hoare triple {4682#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4686#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:28,049 INFO L273 TraceCheckUtils]: 11: Hoare triple {4686#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4690#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:28,049 INFO L273 TraceCheckUtils]: 12: Hoare triple {4690#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4694#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:28,050 INFO L273 TraceCheckUtils]: 13: Hoare triple {4694#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4698#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:28,051 INFO L273 TraceCheckUtils]: 14: Hoare triple {4698#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4702#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:28,052 INFO L273 TraceCheckUtils]: 15: Hoare triple {4702#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4706#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:28,053 INFO L273 TraceCheckUtils]: 16: Hoare triple {4706#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4710#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:28,053 INFO L273 TraceCheckUtils]: 17: Hoare triple {4710#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4714#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:28,054 INFO L273 TraceCheckUtils]: 18: Hoare triple {4714#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4718#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:28,055 INFO L273 TraceCheckUtils]: 19: Hoare triple {4718#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4722#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:28,056 INFO L273 TraceCheckUtils]: 20: Hoare triple {4722#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4726#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:28,057 INFO L273 TraceCheckUtils]: 21: Hoare triple {4726#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4730#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:28,058 INFO L273 TraceCheckUtils]: 22: Hoare triple {4730#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4734#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:28,059 INFO L273 TraceCheckUtils]: 23: Hoare triple {4734#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4738#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:28,060 INFO L273 TraceCheckUtils]: 24: Hoare triple {4738#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4742#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:36:28,060 INFO L273 TraceCheckUtils]: 25: Hoare triple {4742#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4746#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:36:28,061 INFO L273 TraceCheckUtils]: 26: Hoare triple {4746#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4750#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:36:28,062 INFO L273 TraceCheckUtils]: 27: Hoare triple {4750#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4754#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:36:28,063 INFO L273 TraceCheckUtils]: 28: Hoare triple {4754#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4758#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:36:28,064 INFO L273 TraceCheckUtils]: 29: Hoare triple {4758#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {4762#(and (<= 22 main_~main__n~0) (<= main_~main__i~0 23) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:36:28,065 INFO L273 TraceCheckUtils]: 30: Hoare triple {4762#(and (<= 22 main_~main__n~0) (<= main_~main__i~0 23) (= main_~main__sum~0 253))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {4766#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:28,066 INFO L273 TraceCheckUtils]: 31: Hoare triple {4766#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {4649#false} is VALID [2018-11-14 17:36:28,066 INFO L273 TraceCheckUtils]: 32: Hoare triple {4649#false} assume !false; {4649#false} is VALID [2018-11-14 17:36:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:28,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:28,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-11-14 17:36:28,090 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 33 [2018-11-14 17:36:28,090 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:28,090 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 26 states. [2018-11-14 17:36:28,120 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:28,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-14 17:36:28,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-14 17:36:28,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-11-14 17:36:28,121 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 26 states. [2018-11-14 17:36:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:29,676 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-11-14 17:36:29,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-14 17:36:29,676 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 33 [2018-11-14 17:36:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-14 17:36:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 38 transitions. [2018-11-14 17:36:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-14 17:36:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 38 transitions. [2018-11-14 17:36:29,680 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 26 states and 38 transitions. [2018-11-14 17:36:29,716 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:29,717 INFO L225 Difference]: With dead ends: 38 [2018-11-14 17:36:29,717 INFO L226 Difference]: Without dead ends: 35 [2018-11-14 17:36:29,718 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2018-11-14 17:36:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-14 17:36:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-14 17:36:29,789 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:29,789 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand 35 states. [2018-11-14 17:36:29,789 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand 35 states. [2018-11-14 17:36:29,789 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 35 states. [2018-11-14 17:36:29,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:29,790 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-11-14 17:36:29,790 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-14 17:36:29,794 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:29,794 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:29,794 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand 35 states. [2018-11-14 17:36:29,794 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 35 states. [2018-11-14 17:36:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:29,795 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-11-14 17:36:29,796 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-14 17:36:29,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:29,796 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:29,796 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:29,796 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-14 17:36:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-14 17:36:29,797 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-11-14 17:36:29,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:29,797 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-14 17:36:29,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-14 17:36:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-14 17:36:29,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-14 17:36:29,798 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:29,798 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:29,799 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:29,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:29,799 INFO L82 PathProgramCache]: Analyzing trace with hash 2094550384, now seen corresponding path program 23 times [2018-11-14 17:36:29,799 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:29,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:29,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:29,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:29,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:29,824 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:29,824 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:29,824 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:29,837 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-14 17:36:29,882 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-11-14 17:36:29,883 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:29,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:31,472 INFO L256 TraceCheckUtils]: 0: Hoare triple {4973#true} call ULTIMATE.init(); {4973#true} is VALID [2018-11-14 17:36:31,473 INFO L273 TraceCheckUtils]: 1: Hoare triple {4973#true} ~__return_main~0 := 0;~__return_60~0 := 0; {4973#true} is VALID [2018-11-14 17:36:31,473 INFO L273 TraceCheckUtils]: 2: Hoare triple {4973#true} assume true; {4973#true} is VALID [2018-11-14 17:36:31,473 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {4973#true} {4973#true} #28#return; {4973#true} is VALID [2018-11-14 17:36:31,473 INFO L256 TraceCheckUtils]: 4: Hoare triple {4973#true} call #t~ret2 := main(); {4973#true} is VALID [2018-11-14 17:36:31,473 INFO L273 TraceCheckUtils]: 5: Hoare triple {4973#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {4973#true} is VALID [2018-11-14 17:36:31,474 INFO L273 TraceCheckUtils]: 6: Hoare triple {4973#true} assume !!(1 <= ~main__n~0); {4973#true} is VALID [2018-11-14 17:36:31,487 INFO L273 TraceCheckUtils]: 7: Hoare triple {4973#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {4999#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:31,488 INFO L273 TraceCheckUtils]: 8: Hoare triple {4999#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5003#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:31,489 INFO L273 TraceCheckUtils]: 9: Hoare triple {5003#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5007#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:31,489 INFO L273 TraceCheckUtils]: 10: Hoare triple {5007#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5011#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:31,490 INFO L273 TraceCheckUtils]: 11: Hoare triple {5011#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5015#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:31,490 INFO L273 TraceCheckUtils]: 12: Hoare triple {5015#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5019#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:31,491 INFO L273 TraceCheckUtils]: 13: Hoare triple {5019#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5023#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:31,491 INFO L273 TraceCheckUtils]: 14: Hoare triple {5023#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5027#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:31,492 INFO L273 TraceCheckUtils]: 15: Hoare triple {5027#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5031#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:31,493 INFO L273 TraceCheckUtils]: 16: Hoare triple {5031#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5035#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:31,494 INFO L273 TraceCheckUtils]: 17: Hoare triple {5035#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5039#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:31,494 INFO L273 TraceCheckUtils]: 18: Hoare triple {5039#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5043#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:31,495 INFO L273 TraceCheckUtils]: 19: Hoare triple {5043#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5047#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:31,496 INFO L273 TraceCheckUtils]: 20: Hoare triple {5047#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5051#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:31,497 INFO L273 TraceCheckUtils]: 21: Hoare triple {5051#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5055#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:31,498 INFO L273 TraceCheckUtils]: 22: Hoare triple {5055#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5059#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:31,499 INFO L273 TraceCheckUtils]: 23: Hoare triple {5059#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5063#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:31,499 INFO L273 TraceCheckUtils]: 24: Hoare triple {5063#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5067#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:36:31,500 INFO L273 TraceCheckUtils]: 25: Hoare triple {5067#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5071#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:36:31,501 INFO L273 TraceCheckUtils]: 26: Hoare triple {5071#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5075#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:36:31,502 INFO L273 TraceCheckUtils]: 27: Hoare triple {5075#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5079#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:36:31,503 INFO L273 TraceCheckUtils]: 28: Hoare triple {5079#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5083#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:36:31,504 INFO L273 TraceCheckUtils]: 29: Hoare triple {5083#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5087#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:36:31,505 INFO L273 TraceCheckUtils]: 30: Hoare triple {5087#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5091#(and (<= main_~main__i~0 24) (= main_~main__sum~0 276) (<= 23 main_~main__n~0))} is VALID [2018-11-14 17:36:31,506 INFO L273 TraceCheckUtils]: 31: Hoare triple {5091#(and (<= main_~main__i~0 24) (= main_~main__sum~0 276) (<= 23 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {5095#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:31,507 INFO L273 TraceCheckUtils]: 32: Hoare triple {5095#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {4974#false} is VALID [2018-11-14 17:36:31,507 INFO L273 TraceCheckUtils]: 33: Hoare triple {4974#false} assume !false; {4974#false} is VALID [2018-11-14 17:36:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:31,530 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:31,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-11-14 17:36:31,531 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 34 [2018-11-14 17:36:31,531 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:31,531 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 27 states. [2018-11-14 17:36:31,560 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:31,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-14 17:36:31,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-14 17:36:31,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-11-14 17:36:31,562 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 27 states. [2018-11-14 17:36:33,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:33,428 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-11-14 17:36:33,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-14 17:36:33,429 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 34 [2018-11-14 17:36:33,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-14 17:36:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2018-11-14 17:36:33,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-14 17:36:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2018-11-14 17:36:33,433 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 27 states and 39 transitions. [2018-11-14 17:36:33,466 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:33,467 INFO L225 Difference]: With dead ends: 39 [2018-11-14 17:36:33,467 INFO L226 Difference]: Without dead ends: 36 [2018-11-14 17:36:33,468 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2018-11-14 17:36:33,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-14 17:36:33,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-14 17:36:33,531 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:33,532 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second operand 36 states. [2018-11-14 17:36:33,532 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand 36 states. [2018-11-14 17:36:33,532 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 36 states. [2018-11-14 17:36:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:33,533 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-11-14 17:36:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-11-14 17:36:33,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:33,534 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:33,534 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand 36 states. [2018-11-14 17:36:33,534 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 36 states. [2018-11-14 17:36:33,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:33,535 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-11-14 17:36:33,535 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-11-14 17:36:33,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:33,535 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:33,536 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:33,536 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-14 17:36:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-11-14 17:36:33,537 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-11-14 17:36:33,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:33,537 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-11-14 17:36:33,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-14 17:36:33,537 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-11-14 17:36:33,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-14 17:36:33,538 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:33,538 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:33,538 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:33,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:33,538 INFO L82 PathProgramCache]: Analyzing trace with hash 506489991, now seen corresponding path program 24 times [2018-11-14 17:36:33,539 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:33,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:33,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:33,539 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:33,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:33,548 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:33,548 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:33,548 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:33,563 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-14 17:36:33,643 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-14 17:36:33,643 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:33,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:34,248 INFO L256 TraceCheckUtils]: 0: Hoare triple {5308#true} call ULTIMATE.init(); {5308#true} is VALID [2018-11-14 17:36:34,248 INFO L273 TraceCheckUtils]: 1: Hoare triple {5308#true} ~__return_main~0 := 0;~__return_60~0 := 0; {5308#true} is VALID [2018-11-14 17:36:34,248 INFO L273 TraceCheckUtils]: 2: Hoare triple {5308#true} assume true; {5308#true} is VALID [2018-11-14 17:36:34,249 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {5308#true} {5308#true} #28#return; {5308#true} is VALID [2018-11-14 17:36:34,249 INFO L256 TraceCheckUtils]: 4: Hoare triple {5308#true} call #t~ret2 := main(); {5308#true} is VALID [2018-11-14 17:36:34,249 INFO L273 TraceCheckUtils]: 5: Hoare triple {5308#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {5308#true} is VALID [2018-11-14 17:36:34,249 INFO L273 TraceCheckUtils]: 6: Hoare triple {5308#true} assume !!(1 <= ~main__n~0); {5308#true} is VALID [2018-11-14 17:36:34,250 INFO L273 TraceCheckUtils]: 7: Hoare triple {5308#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {5334#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:34,250 INFO L273 TraceCheckUtils]: 8: Hoare triple {5334#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5338#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:34,251 INFO L273 TraceCheckUtils]: 9: Hoare triple {5338#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5342#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:34,251 INFO L273 TraceCheckUtils]: 10: Hoare triple {5342#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5346#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:34,252 INFO L273 TraceCheckUtils]: 11: Hoare triple {5346#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5350#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:34,253 INFO L273 TraceCheckUtils]: 12: Hoare triple {5350#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5354#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:34,254 INFO L273 TraceCheckUtils]: 13: Hoare triple {5354#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5358#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:34,254 INFO L273 TraceCheckUtils]: 14: Hoare triple {5358#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5362#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:34,255 INFO L273 TraceCheckUtils]: 15: Hoare triple {5362#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5366#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:34,256 INFO L273 TraceCheckUtils]: 16: Hoare triple {5366#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5370#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:34,257 INFO L273 TraceCheckUtils]: 17: Hoare triple {5370#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5374#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:34,258 INFO L273 TraceCheckUtils]: 18: Hoare triple {5374#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5378#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:34,259 INFO L273 TraceCheckUtils]: 19: Hoare triple {5378#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5382#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:34,260 INFO L273 TraceCheckUtils]: 20: Hoare triple {5382#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5386#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:34,260 INFO L273 TraceCheckUtils]: 21: Hoare triple {5386#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5390#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:34,261 INFO L273 TraceCheckUtils]: 22: Hoare triple {5390#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5394#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:34,262 INFO L273 TraceCheckUtils]: 23: Hoare triple {5394#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5398#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:34,263 INFO L273 TraceCheckUtils]: 24: Hoare triple {5398#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5402#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:36:34,264 INFO L273 TraceCheckUtils]: 25: Hoare triple {5402#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5406#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:36:34,265 INFO L273 TraceCheckUtils]: 26: Hoare triple {5406#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5410#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:36:34,265 INFO L273 TraceCheckUtils]: 27: Hoare triple {5410#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5414#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:36:34,266 INFO L273 TraceCheckUtils]: 28: Hoare triple {5414#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5418#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:36:34,267 INFO L273 TraceCheckUtils]: 29: Hoare triple {5418#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5422#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:36:34,268 INFO L273 TraceCheckUtils]: 30: Hoare triple {5422#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5426#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} is VALID [2018-11-14 17:36:34,269 INFO L273 TraceCheckUtils]: 31: Hoare triple {5426#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5430#(and (<= 24 main_~main__n~0) (= main_~main__sum~0 300) (<= main_~main__i~0 25))} is VALID [2018-11-14 17:36:34,270 INFO L273 TraceCheckUtils]: 32: Hoare triple {5430#(and (<= 24 main_~main__n~0) (= main_~main__sum~0 300) (<= main_~main__i~0 25))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {5434#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:34,271 INFO L273 TraceCheckUtils]: 33: Hoare triple {5434#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {5309#false} is VALID [2018-11-14 17:36:34,271 INFO L273 TraceCheckUtils]: 34: Hoare triple {5309#false} assume !false; {5309#false} is VALID [2018-11-14 17:36:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:34,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:34,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-11-14 17:36:34,295 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 35 [2018-11-14 17:36:34,295 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:34,295 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 28 states. [2018-11-14 17:36:34,328 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:34,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-14 17:36:34,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-14 17:36:34,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-11-14 17:36:34,329 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 28 states. [2018-11-14 17:36:36,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:36,372 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-11-14 17:36:36,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-14 17:36:36,373 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 35 [2018-11-14 17:36:36,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:36,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-14 17:36:36,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-11-14 17:36:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-14 17:36:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2018-11-14 17:36:36,375 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 28 states and 40 transitions. [2018-11-14 17:36:36,410 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:36,411 INFO L225 Difference]: With dead ends: 40 [2018-11-14 17:36:36,411 INFO L226 Difference]: Without dead ends: 37 [2018-11-14 17:36:36,412 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=755, Unknown=0, NotChecked=0, Total=812 [2018-11-14 17:36:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-14 17:36:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-14 17:36:36,504 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:36,504 INFO L82 GeneralOperation]: Start isEquivalent. First operand 37 states. Second operand 37 states. [2018-11-14 17:36:36,504 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand 37 states. [2018-11-14 17:36:36,504 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 37 states. [2018-11-14 17:36:36,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:36,505 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-11-14 17:36:36,505 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-11-14 17:36:36,506 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:36,506 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:36,506 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand 37 states. [2018-11-14 17:36:36,506 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 37 states. [2018-11-14 17:36:36,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:36,507 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-11-14 17:36:36,507 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-11-14 17:36:36,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:36,507 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:36,507 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:36,507 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-14 17:36:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-11-14 17:36:36,508 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-11-14 17:36:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:36,508 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-11-14 17:36:36,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-14 17:36:36,509 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-11-14 17:36:36,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-14 17:36:36,509 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:36,509 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:36,509 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:36,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:36,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1478741936, now seen corresponding path program 25 times [2018-11-14 17:36:36,510 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:36,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:36,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:36,511 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:36,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:36,519 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:36,519 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:36,519 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:36,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:36:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:36,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:37,387 INFO L256 TraceCheckUtils]: 0: Hoare triple {5653#true} call ULTIMATE.init(); {5653#true} is VALID [2018-11-14 17:36:37,387 INFO L273 TraceCheckUtils]: 1: Hoare triple {5653#true} ~__return_main~0 := 0;~__return_60~0 := 0; {5653#true} is VALID [2018-11-14 17:36:37,387 INFO L273 TraceCheckUtils]: 2: Hoare triple {5653#true} assume true; {5653#true} is VALID [2018-11-14 17:36:37,387 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {5653#true} {5653#true} #28#return; {5653#true} is VALID [2018-11-14 17:36:37,388 INFO L256 TraceCheckUtils]: 4: Hoare triple {5653#true} call #t~ret2 := main(); {5653#true} is VALID [2018-11-14 17:36:37,388 INFO L273 TraceCheckUtils]: 5: Hoare triple {5653#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {5653#true} is VALID [2018-11-14 17:36:37,388 INFO L273 TraceCheckUtils]: 6: Hoare triple {5653#true} assume !!(1 <= ~main__n~0); {5653#true} is VALID [2018-11-14 17:36:37,388 INFO L273 TraceCheckUtils]: 7: Hoare triple {5653#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {5679#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:37,389 INFO L273 TraceCheckUtils]: 8: Hoare triple {5679#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5683#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:37,390 INFO L273 TraceCheckUtils]: 9: Hoare triple {5683#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5687#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:37,391 INFO L273 TraceCheckUtils]: 10: Hoare triple {5687#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5691#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:37,391 INFO L273 TraceCheckUtils]: 11: Hoare triple {5691#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5695#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:37,392 INFO L273 TraceCheckUtils]: 12: Hoare triple {5695#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5699#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:37,392 INFO L273 TraceCheckUtils]: 13: Hoare triple {5699#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5703#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:37,393 INFO L273 TraceCheckUtils]: 14: Hoare triple {5703#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5707#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:37,394 INFO L273 TraceCheckUtils]: 15: Hoare triple {5707#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5711#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:37,395 INFO L273 TraceCheckUtils]: 16: Hoare triple {5711#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5715#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:37,396 INFO L273 TraceCheckUtils]: 17: Hoare triple {5715#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5719#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:37,397 INFO L273 TraceCheckUtils]: 18: Hoare triple {5719#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5723#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:37,398 INFO L273 TraceCheckUtils]: 19: Hoare triple {5723#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5727#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:37,399 INFO L273 TraceCheckUtils]: 20: Hoare triple {5727#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5731#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:37,400 INFO L273 TraceCheckUtils]: 21: Hoare triple {5731#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5735#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:37,400 INFO L273 TraceCheckUtils]: 22: Hoare triple {5735#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5739#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:37,401 INFO L273 TraceCheckUtils]: 23: Hoare triple {5739#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5743#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:37,402 INFO L273 TraceCheckUtils]: 24: Hoare triple {5743#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5747#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:36:37,403 INFO L273 TraceCheckUtils]: 25: Hoare triple {5747#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5751#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:36:37,404 INFO L273 TraceCheckUtils]: 26: Hoare triple {5751#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5755#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:36:37,405 INFO L273 TraceCheckUtils]: 27: Hoare triple {5755#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5759#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:36:37,406 INFO L273 TraceCheckUtils]: 28: Hoare triple {5759#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5763#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:36:37,406 INFO L273 TraceCheckUtils]: 29: Hoare triple {5763#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5767#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:36:37,407 INFO L273 TraceCheckUtils]: 30: Hoare triple {5767#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5771#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} is VALID [2018-11-14 17:36:37,408 INFO L273 TraceCheckUtils]: 31: Hoare triple {5771#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5775#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} is VALID [2018-11-14 17:36:37,409 INFO L273 TraceCheckUtils]: 32: Hoare triple {5775#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {5779#(and (= main_~main__sum~0 325) (<= main_~main__i~0 26) (<= 25 main_~main__n~0))} is VALID [2018-11-14 17:36:37,410 INFO L273 TraceCheckUtils]: 33: Hoare triple {5779#(and (= main_~main__sum~0 325) (<= main_~main__i~0 26) (<= 25 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {5783#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:37,411 INFO L273 TraceCheckUtils]: 34: Hoare triple {5783#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {5654#false} is VALID [2018-11-14 17:36:37,411 INFO L273 TraceCheckUtils]: 35: Hoare triple {5654#false} assume !false; {5654#false} is VALID [2018-11-14 17:36:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:37,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:37,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-11-14 17:36:37,434 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 36 [2018-11-14 17:36:37,434 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:37,434 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 29 states. [2018-11-14 17:36:37,464 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:37,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-14 17:36:37,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-14 17:36:37,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-11-14 17:36:37,466 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 29 states. [2018-11-14 17:36:39,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:39,597 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-11-14 17:36:39,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-14 17:36:39,597 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 36 [2018-11-14 17:36:39,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-14 17:36:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2018-11-14 17:36:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-14 17:36:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2018-11-14 17:36:39,599 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 29 states and 41 transitions. [2018-11-14 17:36:39,635 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:39,636 INFO L225 Difference]: With dead ends: 41 [2018-11-14 17:36:39,636 INFO L226 Difference]: Without dead ends: 38 [2018-11-14 17:36:39,637 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=811, Unknown=0, NotChecked=0, Total=870 [2018-11-14 17:36:39,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-14 17:36:39,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-14 17:36:39,704 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:39,704 INFO L82 GeneralOperation]: Start isEquivalent. First operand 38 states. Second operand 38 states. [2018-11-14 17:36:39,705 INFO L74 IsIncluded]: Start isIncluded. First operand 38 states. Second operand 38 states. [2018-11-14 17:36:39,705 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 38 states. [2018-11-14 17:36:39,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:39,706 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-11-14 17:36:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-11-14 17:36:39,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:39,706 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:39,707 INFO L74 IsIncluded]: Start isIncluded. First operand 38 states. Second operand 38 states. [2018-11-14 17:36:39,707 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 38 states. [2018-11-14 17:36:39,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:39,707 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-11-14 17:36:39,707 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-11-14 17:36:39,707 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:39,708 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:39,708 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:39,708 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-14 17:36:39,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-11-14 17:36:39,709 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-11-14 17:36:39,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:39,709 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-11-14 17:36:39,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-14 17:36:39,709 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-11-14 17:36:39,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-14 17:36:39,710 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:39,710 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:39,710 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:39,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:39,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1403577767, now seen corresponding path program 26 times [2018-11-14 17:36:39,710 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:39,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:39,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:39,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:36:39,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:39,719 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:39,719 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:39,719 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:39,739 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-14 17:36:39,785 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-14 17:36:39,785 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:39,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:40,477 INFO L256 TraceCheckUtils]: 0: Hoare triple {6008#true} call ULTIMATE.init(); {6008#true} is VALID [2018-11-14 17:36:40,478 INFO L273 TraceCheckUtils]: 1: Hoare triple {6008#true} ~__return_main~0 := 0;~__return_60~0 := 0; {6008#true} is VALID [2018-11-14 17:36:40,478 INFO L273 TraceCheckUtils]: 2: Hoare triple {6008#true} assume true; {6008#true} is VALID [2018-11-14 17:36:40,478 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {6008#true} {6008#true} #28#return; {6008#true} is VALID [2018-11-14 17:36:40,479 INFO L256 TraceCheckUtils]: 4: Hoare triple {6008#true} call #t~ret2 := main(); {6008#true} is VALID [2018-11-14 17:36:40,479 INFO L273 TraceCheckUtils]: 5: Hoare triple {6008#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {6008#true} is VALID [2018-11-14 17:36:40,479 INFO L273 TraceCheckUtils]: 6: Hoare triple {6008#true} assume !!(1 <= ~main__n~0); {6008#true} is VALID [2018-11-14 17:36:40,480 INFO L273 TraceCheckUtils]: 7: Hoare triple {6008#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {6034#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:40,481 INFO L273 TraceCheckUtils]: 8: Hoare triple {6034#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6038#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:40,481 INFO L273 TraceCheckUtils]: 9: Hoare triple {6038#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6042#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:40,482 INFO L273 TraceCheckUtils]: 10: Hoare triple {6042#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6046#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:40,482 INFO L273 TraceCheckUtils]: 11: Hoare triple {6046#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6050#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:40,483 INFO L273 TraceCheckUtils]: 12: Hoare triple {6050#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6054#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:40,483 INFO L273 TraceCheckUtils]: 13: Hoare triple {6054#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6058#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:40,484 INFO L273 TraceCheckUtils]: 14: Hoare triple {6058#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6062#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:40,485 INFO L273 TraceCheckUtils]: 15: Hoare triple {6062#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6066#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:40,486 INFO L273 TraceCheckUtils]: 16: Hoare triple {6066#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6070#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:40,486 INFO L273 TraceCheckUtils]: 17: Hoare triple {6070#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6074#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:40,487 INFO L273 TraceCheckUtils]: 18: Hoare triple {6074#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6078#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:40,488 INFO L273 TraceCheckUtils]: 19: Hoare triple {6078#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6082#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:40,489 INFO L273 TraceCheckUtils]: 20: Hoare triple {6082#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6086#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:40,490 INFO L273 TraceCheckUtils]: 21: Hoare triple {6086#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6090#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:40,491 INFO L273 TraceCheckUtils]: 22: Hoare triple {6090#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6094#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:40,492 INFO L273 TraceCheckUtils]: 23: Hoare triple {6094#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6098#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:40,492 INFO L273 TraceCheckUtils]: 24: Hoare triple {6098#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6102#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:36:40,493 INFO L273 TraceCheckUtils]: 25: Hoare triple {6102#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6106#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:36:40,494 INFO L273 TraceCheckUtils]: 26: Hoare triple {6106#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6110#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:36:40,495 INFO L273 TraceCheckUtils]: 27: Hoare triple {6110#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6114#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:36:40,496 INFO L273 TraceCheckUtils]: 28: Hoare triple {6114#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6118#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:36:40,497 INFO L273 TraceCheckUtils]: 29: Hoare triple {6118#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6122#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:36:40,498 INFO L273 TraceCheckUtils]: 30: Hoare triple {6122#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6126#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} is VALID [2018-11-14 17:36:40,498 INFO L273 TraceCheckUtils]: 31: Hoare triple {6126#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6130#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} is VALID [2018-11-14 17:36:40,499 INFO L273 TraceCheckUtils]: 32: Hoare triple {6130#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6134#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} is VALID [2018-11-14 17:36:40,500 INFO L273 TraceCheckUtils]: 33: Hoare triple {6134#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6138#(and (= main_~main__sum~0 351) (<= main_~main__i~0 27) (<= 26 main_~main__n~0))} is VALID [2018-11-14 17:36:40,501 INFO L273 TraceCheckUtils]: 34: Hoare triple {6138#(and (= main_~main__sum~0 351) (<= main_~main__i~0 27) (<= 26 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {6142#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:40,502 INFO L273 TraceCheckUtils]: 35: Hoare triple {6142#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {6009#false} is VALID [2018-11-14 17:36:40,502 INFO L273 TraceCheckUtils]: 36: Hoare triple {6009#false} assume !false; {6009#false} is VALID [2018-11-14 17:36:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:40,526 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:40,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-11-14 17:36:40,527 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 37 [2018-11-14 17:36:40,527 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:40,527 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 30 states. [2018-11-14 17:36:40,571 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:40,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-14 17:36:40,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-14 17:36:40,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-11-14 17:36:40,572 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 30 states. [2018-11-14 17:36:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:42,767 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-11-14 17:36:42,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-14 17:36:42,767 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 37 [2018-11-14 17:36:42,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-14 17:36:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 42 transitions. [2018-11-14 17:36:42,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-14 17:36:42,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 42 transitions. [2018-11-14 17:36:42,769 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 30 states and 42 transitions. [2018-11-14 17:36:42,804 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:42,805 INFO L225 Difference]: With dead ends: 42 [2018-11-14 17:36:42,806 INFO L226 Difference]: Without dead ends: 39 [2018-11-14 17:36:42,806 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=869, Unknown=0, NotChecked=0, Total=930 [2018-11-14 17:36:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-14 17:36:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-14 17:36:42,878 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:42,878 INFO L82 GeneralOperation]: Start isEquivalent. First operand 39 states. Second operand 39 states. [2018-11-14 17:36:42,878 INFO L74 IsIncluded]: Start isIncluded. First operand 39 states. Second operand 39 states. [2018-11-14 17:36:42,878 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 39 states. [2018-11-14 17:36:42,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:42,879 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-11-14 17:36:42,880 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-11-14 17:36:42,880 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:42,880 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:42,880 INFO L74 IsIncluded]: Start isIncluded. First operand 39 states. Second operand 39 states. [2018-11-14 17:36:42,880 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 39 states. [2018-11-14 17:36:42,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:42,881 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-11-14 17:36:42,882 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-11-14 17:36:42,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:42,882 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:42,882 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:42,882 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:42,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-14 17:36:42,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-11-14 17:36:42,883 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-11-14 17:36:42,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:42,883 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-11-14 17:36:42,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-14 17:36:42,883 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-11-14 17:36:42,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-14 17:36:42,884 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:42,884 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:42,884 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:42,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:42,885 INFO L82 PathProgramCache]: Analyzing trace with hash 561175344, now seen corresponding path program 27 times [2018-11-14 17:36:42,885 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:42,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:42,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:42,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:42,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:42,893 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:42,893 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:42,893 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:42,912 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-14 17:36:43,334 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-11-14 17:36:43,334 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:43,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:44,031 INFO L256 TraceCheckUtils]: 0: Hoare triple {6373#true} call ULTIMATE.init(); {6373#true} is VALID [2018-11-14 17:36:44,031 INFO L273 TraceCheckUtils]: 1: Hoare triple {6373#true} ~__return_main~0 := 0;~__return_60~0 := 0; {6373#true} is VALID [2018-11-14 17:36:44,031 INFO L273 TraceCheckUtils]: 2: Hoare triple {6373#true} assume true; {6373#true} is VALID [2018-11-14 17:36:44,031 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {6373#true} {6373#true} #28#return; {6373#true} is VALID [2018-11-14 17:36:44,032 INFO L256 TraceCheckUtils]: 4: Hoare triple {6373#true} call #t~ret2 := main(); {6373#true} is VALID [2018-11-14 17:36:44,032 INFO L273 TraceCheckUtils]: 5: Hoare triple {6373#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {6373#true} is VALID [2018-11-14 17:36:44,032 INFO L273 TraceCheckUtils]: 6: Hoare triple {6373#true} assume !!(1 <= ~main__n~0); {6373#true} is VALID [2018-11-14 17:36:44,033 INFO L273 TraceCheckUtils]: 7: Hoare triple {6373#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {6399#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:44,033 INFO L273 TraceCheckUtils]: 8: Hoare triple {6399#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6403#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:44,034 INFO L273 TraceCheckUtils]: 9: Hoare triple {6403#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6407#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:44,034 INFO L273 TraceCheckUtils]: 10: Hoare triple {6407#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6411#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:44,035 INFO L273 TraceCheckUtils]: 11: Hoare triple {6411#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6415#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:44,035 INFO L273 TraceCheckUtils]: 12: Hoare triple {6415#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6419#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:44,058 INFO L273 TraceCheckUtils]: 13: Hoare triple {6419#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6423#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:44,058 INFO L273 TraceCheckUtils]: 14: Hoare triple {6423#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6427#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:44,059 INFO L273 TraceCheckUtils]: 15: Hoare triple {6427#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6431#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:44,060 INFO L273 TraceCheckUtils]: 16: Hoare triple {6431#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6435#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:44,060 INFO L273 TraceCheckUtils]: 17: Hoare triple {6435#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6439#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:44,061 INFO L273 TraceCheckUtils]: 18: Hoare triple {6439#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6443#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:44,061 INFO L273 TraceCheckUtils]: 19: Hoare triple {6443#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6447#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:44,062 INFO L273 TraceCheckUtils]: 20: Hoare triple {6447#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6451#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:44,063 INFO L273 TraceCheckUtils]: 21: Hoare triple {6451#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6455#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:44,064 INFO L273 TraceCheckUtils]: 22: Hoare triple {6455#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6459#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:44,065 INFO L273 TraceCheckUtils]: 23: Hoare triple {6459#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6463#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:44,065 INFO L273 TraceCheckUtils]: 24: Hoare triple {6463#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6467#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:36:44,066 INFO L273 TraceCheckUtils]: 25: Hoare triple {6467#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6471#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:36:44,067 INFO L273 TraceCheckUtils]: 26: Hoare triple {6471#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6475#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:36:44,068 INFO L273 TraceCheckUtils]: 27: Hoare triple {6475#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6479#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:36:44,069 INFO L273 TraceCheckUtils]: 28: Hoare triple {6479#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6483#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:36:44,070 INFO L273 TraceCheckUtils]: 29: Hoare triple {6483#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6487#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:36:44,070 INFO L273 TraceCheckUtils]: 30: Hoare triple {6487#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6491#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} is VALID [2018-11-14 17:36:44,071 INFO L273 TraceCheckUtils]: 31: Hoare triple {6491#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6495#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} is VALID [2018-11-14 17:36:44,072 INFO L273 TraceCheckUtils]: 32: Hoare triple {6495#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6499#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} is VALID [2018-11-14 17:36:44,073 INFO L273 TraceCheckUtils]: 33: Hoare triple {6499#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6503#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} is VALID [2018-11-14 17:36:44,074 INFO L273 TraceCheckUtils]: 34: Hoare triple {6503#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6507#(and (<= 27 main_~main__n~0) (= main_~main__sum~0 378) (<= main_~main__i~0 28))} is VALID [2018-11-14 17:36:44,075 INFO L273 TraceCheckUtils]: 35: Hoare triple {6507#(and (<= 27 main_~main__n~0) (= main_~main__sum~0 378) (<= main_~main__i~0 28))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {6511#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:44,076 INFO L273 TraceCheckUtils]: 36: Hoare triple {6511#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {6374#false} is VALID [2018-11-14 17:36:44,076 INFO L273 TraceCheckUtils]: 37: Hoare triple {6374#false} assume !false; {6374#false} is VALID [2018-11-14 17:36:44,079 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:44,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:44,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-11-14 17:36:44,099 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 38 [2018-11-14 17:36:44,099 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:44,100 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 31 states. [2018-11-14 17:36:44,133 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:44,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-14 17:36:44,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-14 17:36:44,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-11-14 17:36:44,135 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 31 states. [2018-11-14 17:36:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:46,540 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-11-14 17:36:46,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-14 17:36:46,540 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 38 [2018-11-14 17:36:46,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-14 17:36:46,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2018-11-14 17:36:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-14 17:36:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2018-11-14 17:36:46,543 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 31 states and 43 transitions. [2018-11-14 17:36:46,586 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:46,587 INFO L225 Difference]: With dead ends: 43 [2018-11-14 17:36:46,587 INFO L226 Difference]: Without dead ends: 40 [2018-11-14 17:36:46,588 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=929, Unknown=0, NotChecked=0, Total=992 [2018-11-14 17:36:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-14 17:36:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-14 17:36:46,693 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:46,693 INFO L82 GeneralOperation]: Start isEquivalent. First operand 40 states. Second operand 40 states. [2018-11-14 17:36:46,694 INFO L74 IsIncluded]: Start isIncluded. First operand 40 states. Second operand 40 states. [2018-11-14 17:36:46,694 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 40 states. [2018-11-14 17:36:46,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:46,695 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-11-14 17:36:46,695 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-11-14 17:36:46,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:46,696 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:46,696 INFO L74 IsIncluded]: Start isIncluded. First operand 40 states. Second operand 40 states. [2018-11-14 17:36:46,696 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 40 states. [2018-11-14 17:36:46,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:46,697 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-11-14 17:36:46,697 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-11-14 17:36:46,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:46,697 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:46,697 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:46,697 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:46,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-14 17:36:46,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-11-14 17:36:46,698 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-11-14 17:36:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:46,698 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-11-14 17:36:46,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-14 17:36:46,699 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-11-14 17:36:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-14 17:36:46,699 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:46,699 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:46,699 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:46,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:46,700 INFO L82 PathProgramCache]: Analyzing trace with hash 216504007, now seen corresponding path program 28 times [2018-11-14 17:36:46,700 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:46,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:46,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:46,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:46,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:46,709 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:46,709 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:46,709 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:46,739 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-14 17:36:46,973 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-14 17:36:46,974 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:46,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:47,711 INFO L256 TraceCheckUtils]: 0: Hoare triple {6748#true} call ULTIMATE.init(); {6748#true} is VALID [2018-11-14 17:36:47,711 INFO L273 TraceCheckUtils]: 1: Hoare triple {6748#true} ~__return_main~0 := 0;~__return_60~0 := 0; {6748#true} is VALID [2018-11-14 17:36:47,711 INFO L273 TraceCheckUtils]: 2: Hoare triple {6748#true} assume true; {6748#true} is VALID [2018-11-14 17:36:47,711 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {6748#true} {6748#true} #28#return; {6748#true} is VALID [2018-11-14 17:36:47,711 INFO L256 TraceCheckUtils]: 4: Hoare triple {6748#true} call #t~ret2 := main(); {6748#true} is VALID [2018-11-14 17:36:47,711 INFO L273 TraceCheckUtils]: 5: Hoare triple {6748#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {6748#true} is VALID [2018-11-14 17:36:47,712 INFO L273 TraceCheckUtils]: 6: Hoare triple {6748#true} assume !!(1 <= ~main__n~0); {6748#true} is VALID [2018-11-14 17:36:47,712 INFO L273 TraceCheckUtils]: 7: Hoare triple {6748#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {6774#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:47,712 INFO L273 TraceCheckUtils]: 8: Hoare triple {6774#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6778#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:36:47,713 INFO L273 TraceCheckUtils]: 9: Hoare triple {6778#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6782#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:47,714 INFO L273 TraceCheckUtils]: 10: Hoare triple {6782#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6786#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:47,714 INFO L273 TraceCheckUtils]: 11: Hoare triple {6786#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6790#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:47,715 INFO L273 TraceCheckUtils]: 12: Hoare triple {6790#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6794#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:47,715 INFO L273 TraceCheckUtils]: 13: Hoare triple {6794#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6798#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:47,716 INFO L273 TraceCheckUtils]: 14: Hoare triple {6798#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6802#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:47,717 INFO L273 TraceCheckUtils]: 15: Hoare triple {6802#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6806#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:47,718 INFO L273 TraceCheckUtils]: 16: Hoare triple {6806#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6810#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:47,719 INFO L273 TraceCheckUtils]: 17: Hoare triple {6810#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6814#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:47,719 INFO L273 TraceCheckUtils]: 18: Hoare triple {6814#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6818#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:47,720 INFO L273 TraceCheckUtils]: 19: Hoare triple {6818#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6822#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:47,721 INFO L273 TraceCheckUtils]: 20: Hoare triple {6822#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6826#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:47,722 INFO L273 TraceCheckUtils]: 21: Hoare triple {6826#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6830#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:47,723 INFO L273 TraceCheckUtils]: 22: Hoare triple {6830#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6834#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:47,724 INFO L273 TraceCheckUtils]: 23: Hoare triple {6834#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6838#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:47,725 INFO L273 TraceCheckUtils]: 24: Hoare triple {6838#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6842#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:36:47,726 INFO L273 TraceCheckUtils]: 25: Hoare triple {6842#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6846#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:36:47,726 INFO L273 TraceCheckUtils]: 26: Hoare triple {6846#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6850#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:36:47,727 INFO L273 TraceCheckUtils]: 27: Hoare triple {6850#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6854#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:36:47,728 INFO L273 TraceCheckUtils]: 28: Hoare triple {6854#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6858#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:36:47,729 INFO L273 TraceCheckUtils]: 29: Hoare triple {6858#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6862#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:36:47,730 INFO L273 TraceCheckUtils]: 30: Hoare triple {6862#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6866#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} is VALID [2018-11-14 17:36:47,731 INFO L273 TraceCheckUtils]: 31: Hoare triple {6866#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6870#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} is VALID [2018-11-14 17:36:47,731 INFO L273 TraceCheckUtils]: 32: Hoare triple {6870#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6874#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} is VALID [2018-11-14 17:36:47,732 INFO L273 TraceCheckUtils]: 33: Hoare triple {6874#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6878#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} is VALID [2018-11-14 17:36:47,733 INFO L273 TraceCheckUtils]: 34: Hoare triple {6878#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6882#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} is VALID [2018-11-14 17:36:47,734 INFO L273 TraceCheckUtils]: 35: Hoare triple {6882#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {6886#(and (<= 28 main_~main__n~0) (<= main_~main__i~0 29) (= main_~main__sum~0 406))} is VALID [2018-11-14 17:36:47,735 INFO L273 TraceCheckUtils]: 36: Hoare triple {6886#(and (<= 28 main_~main__n~0) (<= main_~main__i~0 29) (= main_~main__sum~0 406))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {6890#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:47,736 INFO L273 TraceCheckUtils]: 37: Hoare triple {6890#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {6749#false} is VALID [2018-11-14 17:36:47,736 INFO L273 TraceCheckUtils]: 38: Hoare triple {6749#false} assume !false; {6749#false} is VALID [2018-11-14 17:36:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:47,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:47,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-11-14 17:36:47,761 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 39 [2018-11-14 17:36:47,762 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:47,762 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 32 states. [2018-11-14 17:36:47,806 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:47,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-14 17:36:47,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-14 17:36:47,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-11-14 17:36:47,808 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 32 states. [2018-11-14 17:36:50,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:50,187 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-11-14 17:36:50,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-14 17:36:50,187 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 39 [2018-11-14 17:36:50,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-14 17:36:50,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2018-11-14 17:36:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-14 17:36:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2018-11-14 17:36:50,190 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 32 states and 44 transitions. [2018-11-14 17:36:50,234 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:50,235 INFO L225 Difference]: With dead ends: 44 [2018-11-14 17:36:50,235 INFO L226 Difference]: Without dead ends: 41 [2018-11-14 17:36:50,236 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=991, Unknown=0, NotChecked=0, Total=1056 [2018-11-14 17:36:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-14 17:36:50,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-14 17:36:50,319 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:50,319 INFO L82 GeneralOperation]: Start isEquivalent. First operand 41 states. Second operand 41 states. [2018-11-14 17:36:50,319 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand 41 states. [2018-11-14 17:36:50,319 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 41 states. [2018-11-14 17:36:50,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:50,320 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-11-14 17:36:50,321 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-11-14 17:36:50,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:50,321 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:50,321 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand 41 states. [2018-11-14 17:36:50,321 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 41 states. [2018-11-14 17:36:50,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:50,322 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-11-14 17:36:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-11-14 17:36:50,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:50,323 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:50,323 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:50,323 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-14 17:36:50,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-11-14 17:36:50,323 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-11-14 17:36:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:50,324 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-11-14 17:36:50,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-14 17:36:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-11-14 17:36:50,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-14 17:36:50,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:50,324 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:50,325 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:50,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:50,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1878372848, now seen corresponding path program 29 times [2018-11-14 17:36:50,325 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:50,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:50,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:50,326 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:50,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:50,333 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:50,333 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:50,333 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:50,351 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-14 17:36:50,404 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-11-14 17:36:50,404 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:50,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:51,480 INFO L256 TraceCheckUtils]: 0: Hoare triple {7133#true} call ULTIMATE.init(); {7133#true} is VALID [2018-11-14 17:36:51,480 INFO L273 TraceCheckUtils]: 1: Hoare triple {7133#true} ~__return_main~0 := 0;~__return_60~0 := 0; {7133#true} is VALID [2018-11-14 17:36:51,480 INFO L273 TraceCheckUtils]: 2: Hoare triple {7133#true} assume true; {7133#true} is VALID [2018-11-14 17:36:51,480 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {7133#true} {7133#true} #28#return; {7133#true} is VALID [2018-11-14 17:36:51,480 INFO L256 TraceCheckUtils]: 4: Hoare triple {7133#true} call #t~ret2 := main(); {7133#true} is VALID [2018-11-14 17:36:51,480 INFO L273 TraceCheckUtils]: 5: Hoare triple {7133#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {7133#true} is VALID [2018-11-14 17:36:51,481 INFO L273 TraceCheckUtils]: 6: Hoare triple {7133#true} assume !!(1 <= ~main__n~0); {7133#true} is VALID [2018-11-14 17:36:51,481 INFO L273 TraceCheckUtils]: 7: Hoare triple {7133#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {7159#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:51,482 INFO L273 TraceCheckUtils]: 8: Hoare triple {7159#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7163#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:51,482 INFO L273 TraceCheckUtils]: 9: Hoare triple {7163#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7167#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:51,483 INFO L273 TraceCheckUtils]: 10: Hoare triple {7167#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7171#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:51,483 INFO L273 TraceCheckUtils]: 11: Hoare triple {7171#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7175#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:51,484 INFO L273 TraceCheckUtils]: 12: Hoare triple {7175#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7179#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:51,484 INFO L273 TraceCheckUtils]: 13: Hoare triple {7179#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7183#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:51,485 INFO L273 TraceCheckUtils]: 14: Hoare triple {7183#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7187#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:51,486 INFO L273 TraceCheckUtils]: 15: Hoare triple {7187#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7191#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:51,487 INFO L273 TraceCheckUtils]: 16: Hoare triple {7191#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7195#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:51,488 INFO L273 TraceCheckUtils]: 17: Hoare triple {7195#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7199#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:51,489 INFO L273 TraceCheckUtils]: 18: Hoare triple {7199#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7203#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:51,490 INFO L273 TraceCheckUtils]: 19: Hoare triple {7203#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7207#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:51,490 INFO L273 TraceCheckUtils]: 20: Hoare triple {7207#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7211#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:51,491 INFO L273 TraceCheckUtils]: 21: Hoare triple {7211#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7215#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:51,492 INFO L273 TraceCheckUtils]: 22: Hoare triple {7215#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7219#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:51,493 INFO L273 TraceCheckUtils]: 23: Hoare triple {7219#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7223#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:51,494 INFO L273 TraceCheckUtils]: 24: Hoare triple {7223#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7227#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:36:51,495 INFO L273 TraceCheckUtils]: 25: Hoare triple {7227#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7231#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:36:51,496 INFO L273 TraceCheckUtils]: 26: Hoare triple {7231#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7235#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:36:51,497 INFO L273 TraceCheckUtils]: 27: Hoare triple {7235#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7239#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:36:51,497 INFO L273 TraceCheckUtils]: 28: Hoare triple {7239#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7243#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:36:51,498 INFO L273 TraceCheckUtils]: 29: Hoare triple {7243#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7247#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:36:51,499 INFO L273 TraceCheckUtils]: 30: Hoare triple {7247#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7251#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} is VALID [2018-11-14 17:36:51,500 INFO L273 TraceCheckUtils]: 31: Hoare triple {7251#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7255#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} is VALID [2018-11-14 17:36:51,501 INFO L273 TraceCheckUtils]: 32: Hoare triple {7255#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7259#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} is VALID [2018-11-14 17:36:51,502 INFO L273 TraceCheckUtils]: 33: Hoare triple {7259#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7263#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} is VALID [2018-11-14 17:36:51,503 INFO L273 TraceCheckUtils]: 34: Hoare triple {7263#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7267#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} is VALID [2018-11-14 17:36:51,504 INFO L273 TraceCheckUtils]: 35: Hoare triple {7267#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7271#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} is VALID [2018-11-14 17:36:51,505 INFO L273 TraceCheckUtils]: 36: Hoare triple {7271#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7275#(and (= main_~main__sum~0 435) (<= main_~main__i~0 30) (<= 29 main_~main__n~0))} is VALID [2018-11-14 17:36:51,506 INFO L273 TraceCheckUtils]: 37: Hoare triple {7275#(and (= main_~main__sum~0 435) (<= main_~main__i~0 30) (<= 29 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {7279#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:51,507 INFO L273 TraceCheckUtils]: 38: Hoare triple {7279#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {7134#false} is VALID [2018-11-14 17:36:51,507 INFO L273 TraceCheckUtils]: 39: Hoare triple {7134#false} assume !false; {7134#false} is VALID [2018-11-14 17:36:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:51,531 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:51,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-11-14 17:36:51,531 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 40 [2018-11-14 17:36:51,531 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:51,532 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 33 states. [2018-11-14 17:36:51,569 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:51,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-14 17:36:51,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-14 17:36:51,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-11-14 17:36:51,570 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 33 states. [2018-11-14 17:36:54,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:54,085 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-11-14 17:36:54,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-14 17:36:54,085 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 40 [2018-11-14 17:36:54,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-14 17:36:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2018-11-14 17:36:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-14 17:36:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2018-11-14 17:36:54,087 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 33 states and 45 transitions. [2018-11-14 17:36:54,234 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:54,235 INFO L225 Difference]: With dead ends: 45 [2018-11-14 17:36:54,235 INFO L226 Difference]: Without dead ends: 42 [2018-11-14 17:36:54,236 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=1055, Unknown=0, NotChecked=0, Total=1122 [2018-11-14 17:36:54,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-14 17:36:54,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-14 17:36:54,618 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:54,618 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand 42 states. [2018-11-14 17:36:54,618 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2018-11-14 17:36:54,618 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2018-11-14 17:36:54,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:54,619 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-11-14 17:36:54,619 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-11-14 17:36:54,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:54,620 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:54,620 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2018-11-14 17:36:54,620 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2018-11-14 17:36:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:54,621 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-11-14 17:36:54,621 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-11-14 17:36:54,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:54,621 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:54,621 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:54,621 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-14 17:36:54,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-11-14 17:36:54,623 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-11-14 17:36:54,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:54,623 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-11-14 17:36:54,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-14 17:36:54,623 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-11-14 17:36:54,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-14 17:36:54,624 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:54,624 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:54,624 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:54,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:54,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1899921383, now seen corresponding path program 30 times [2018-11-14 17:36:54,625 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:54,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:54,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:54,625 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:54,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:54,633 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:54,633 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:54,633 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:54,642 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-14 17:36:54,776 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-11-14 17:36:54,777 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:36:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:54,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:55,643 INFO L256 TraceCheckUtils]: 0: Hoare triple {7528#true} call ULTIMATE.init(); {7528#true} is VALID [2018-11-14 17:36:55,643 INFO L273 TraceCheckUtils]: 1: Hoare triple {7528#true} ~__return_main~0 := 0;~__return_60~0 := 0; {7528#true} is VALID [2018-11-14 17:36:55,644 INFO L273 TraceCheckUtils]: 2: Hoare triple {7528#true} assume true; {7528#true} is VALID [2018-11-14 17:36:55,644 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {7528#true} {7528#true} #28#return; {7528#true} is VALID [2018-11-14 17:36:55,644 INFO L256 TraceCheckUtils]: 4: Hoare triple {7528#true} call #t~ret2 := main(); {7528#true} is VALID [2018-11-14 17:36:55,644 INFO L273 TraceCheckUtils]: 5: Hoare triple {7528#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {7528#true} is VALID [2018-11-14 17:36:55,645 INFO L273 TraceCheckUtils]: 6: Hoare triple {7528#true} assume !!(1 <= ~main__n~0); {7528#true} is VALID [2018-11-14 17:36:55,645 INFO L273 TraceCheckUtils]: 7: Hoare triple {7528#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {7554#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:55,646 INFO L273 TraceCheckUtils]: 8: Hoare triple {7554#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7558#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} is VALID [2018-11-14 17:36:55,646 INFO L273 TraceCheckUtils]: 9: Hoare triple {7558#(and (= main_~main__sum~0 1) (= 2 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7562#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:55,647 INFO L273 TraceCheckUtils]: 10: Hoare triple {7562#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7566#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:55,647 INFO L273 TraceCheckUtils]: 11: Hoare triple {7566#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7570#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:36:55,648 INFO L273 TraceCheckUtils]: 12: Hoare triple {7570#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7574#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:36:55,667 INFO L273 TraceCheckUtils]: 13: Hoare triple {7574#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7578#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:36:55,682 INFO L273 TraceCheckUtils]: 14: Hoare triple {7578#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7582#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:36:55,691 INFO L273 TraceCheckUtils]: 15: Hoare triple {7582#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7586#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:36:55,704 INFO L273 TraceCheckUtils]: 16: Hoare triple {7586#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7590#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:36:55,713 INFO L273 TraceCheckUtils]: 17: Hoare triple {7590#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7594#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:36:55,723 INFO L273 TraceCheckUtils]: 18: Hoare triple {7594#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7598#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:36:55,737 INFO L273 TraceCheckUtils]: 19: Hoare triple {7598#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7602#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:36:55,746 INFO L273 TraceCheckUtils]: 20: Hoare triple {7602#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7606#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:36:55,759 INFO L273 TraceCheckUtils]: 21: Hoare triple {7606#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7610#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:36:55,760 INFO L273 TraceCheckUtils]: 22: Hoare triple {7610#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7614#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:36:55,761 INFO L273 TraceCheckUtils]: 23: Hoare triple {7614#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7618#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:36:55,761 INFO L273 TraceCheckUtils]: 24: Hoare triple {7618#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7622#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:36:55,764 INFO L273 TraceCheckUtils]: 25: Hoare triple {7622#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7626#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:36:55,764 INFO L273 TraceCheckUtils]: 26: Hoare triple {7626#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7630#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:36:55,765 INFO L273 TraceCheckUtils]: 27: Hoare triple {7630#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7634#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:36:55,765 INFO L273 TraceCheckUtils]: 28: Hoare triple {7634#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7638#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:36:55,766 INFO L273 TraceCheckUtils]: 29: Hoare triple {7638#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7642#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:36:55,766 INFO L273 TraceCheckUtils]: 30: Hoare triple {7642#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7646#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} is VALID [2018-11-14 17:36:55,767 INFO L273 TraceCheckUtils]: 31: Hoare triple {7646#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7650#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} is VALID [2018-11-14 17:36:55,767 INFO L273 TraceCheckUtils]: 32: Hoare triple {7650#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7654#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} is VALID [2018-11-14 17:36:55,768 INFO L273 TraceCheckUtils]: 33: Hoare triple {7654#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7658#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} is VALID [2018-11-14 17:36:55,769 INFO L273 TraceCheckUtils]: 34: Hoare triple {7658#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7662#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} is VALID [2018-11-14 17:36:55,770 INFO L273 TraceCheckUtils]: 35: Hoare triple {7662#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7666#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} is VALID [2018-11-14 17:36:55,771 INFO L273 TraceCheckUtils]: 36: Hoare triple {7666#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7670#(and (= 30 main_~main__i~0) (= main_~main__sum~0 435))} is VALID [2018-11-14 17:36:55,772 INFO L273 TraceCheckUtils]: 37: Hoare triple {7670#(and (= 30 main_~main__i~0) (= main_~main__sum~0 435))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7674#(and (<= main_~main__i~0 31) (= main_~main__sum~0 465) (<= 30 main_~main__n~0))} is VALID [2018-11-14 17:36:55,773 INFO L273 TraceCheckUtils]: 38: Hoare triple {7674#(and (<= main_~main__i~0 31) (= main_~main__sum~0 465) (<= 30 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {7678#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:36:55,774 INFO L273 TraceCheckUtils]: 39: Hoare triple {7678#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {7529#false} is VALID [2018-11-14 17:36:55,774 INFO L273 TraceCheckUtils]: 40: Hoare triple {7529#false} assume !false; {7529#false} is VALID [2018-11-14 17:36:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:36:55,799 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:36:55,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-11-14 17:36:55,799 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 41 [2018-11-14 17:36:55,799 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:36:55,799 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 34 states. [2018-11-14 17:36:55,837 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:55,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-14 17:36:55,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-14 17:36:55,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-11-14 17:36:55,838 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 34 states. [2018-11-14 17:36:58,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:58,715 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-11-14 17:36:58,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-14 17:36:58,715 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 41 [2018-11-14 17:36:58,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:36:58,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-14 17:36:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2018-11-14 17:36:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-14 17:36:58,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2018-11-14 17:36:58,718 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 34 states and 46 transitions. [2018-11-14 17:36:58,765 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:36:58,766 INFO L225 Difference]: With dead ends: 46 [2018-11-14 17:36:58,766 INFO L226 Difference]: Without dead ends: 43 [2018-11-14 17:36:58,767 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=1121, Unknown=0, NotChecked=0, Total=1190 [2018-11-14 17:36:58,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-14 17:36:58,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-14 17:36:58,874 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:36:58,875 INFO L82 GeneralOperation]: Start isEquivalent. First operand 43 states. Second operand 43 states. [2018-11-14 17:36:58,875 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 43 states. [2018-11-14 17:36:58,875 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 43 states. [2018-11-14 17:36:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:58,876 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-11-14 17:36:58,876 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-11-14 17:36:58,876 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:58,877 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:58,877 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 43 states. [2018-11-14 17:36:58,877 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 43 states. [2018-11-14 17:36:58,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:36:58,878 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-11-14 17:36:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-11-14 17:36:58,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:36:58,878 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:36:58,878 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:36:58,879 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:36:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-14 17:36:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-11-14 17:36:58,879 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-11-14 17:36:58,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:36:58,880 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-11-14 17:36:58,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-14 17:36:58,880 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-11-14 17:36:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-14 17:36:58,880 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:36:58,881 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:36:58,881 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:36:58,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:36:58,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1232041744, now seen corresponding path program 31 times [2018-11-14 17:36:58,881 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:36:58,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:36:58,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:58,882 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:36:58,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:36:58,890 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:36:58,890 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:36:58,890 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:36:58,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:36:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:36:59,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:36:59,995 INFO L256 TraceCheckUtils]: 0: Hoare triple {7933#true} call ULTIMATE.init(); {7933#true} is VALID [2018-11-14 17:36:59,995 INFO L273 TraceCheckUtils]: 1: Hoare triple {7933#true} ~__return_main~0 := 0;~__return_60~0 := 0; {7933#true} is VALID [2018-11-14 17:36:59,995 INFO L273 TraceCheckUtils]: 2: Hoare triple {7933#true} assume true; {7933#true} is VALID [2018-11-14 17:36:59,995 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {7933#true} {7933#true} #28#return; {7933#true} is VALID [2018-11-14 17:36:59,996 INFO L256 TraceCheckUtils]: 4: Hoare triple {7933#true} call #t~ret2 := main(); {7933#true} is VALID [2018-11-14 17:36:59,996 INFO L273 TraceCheckUtils]: 5: Hoare triple {7933#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {7933#true} is VALID [2018-11-14 17:36:59,996 INFO L273 TraceCheckUtils]: 6: Hoare triple {7933#true} assume !!(1 <= ~main__n~0); {7933#true} is VALID [2018-11-14 17:36:59,997 INFO L273 TraceCheckUtils]: 7: Hoare triple {7933#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {7959#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:36:59,997 INFO L273 TraceCheckUtils]: 8: Hoare triple {7959#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7963#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:36:59,998 INFO L273 TraceCheckUtils]: 9: Hoare triple {7963#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7967#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:36:59,998 INFO L273 TraceCheckUtils]: 10: Hoare triple {7967#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7971#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:36:59,999 INFO L273 TraceCheckUtils]: 11: Hoare triple {7971#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7975#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:37:00,000 INFO L273 TraceCheckUtils]: 12: Hoare triple {7975#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7979#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:37:00,001 INFO L273 TraceCheckUtils]: 13: Hoare triple {7979#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7983#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:37:00,001 INFO L273 TraceCheckUtils]: 14: Hoare triple {7983#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7987#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:37:00,002 INFO L273 TraceCheckUtils]: 15: Hoare triple {7987#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7991#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:37:00,003 INFO L273 TraceCheckUtils]: 16: Hoare triple {7991#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7995#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:37:00,004 INFO L273 TraceCheckUtils]: 17: Hoare triple {7995#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {7999#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:37:00,005 INFO L273 TraceCheckUtils]: 18: Hoare triple {7999#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8003#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:37:00,006 INFO L273 TraceCheckUtils]: 19: Hoare triple {8003#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8007#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:37:00,006 INFO L273 TraceCheckUtils]: 20: Hoare triple {8007#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8011#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:37:00,007 INFO L273 TraceCheckUtils]: 21: Hoare triple {8011#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8015#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:37:00,008 INFO L273 TraceCheckUtils]: 22: Hoare triple {8015#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8019#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:37:00,009 INFO L273 TraceCheckUtils]: 23: Hoare triple {8019#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8023#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:37:00,010 INFO L273 TraceCheckUtils]: 24: Hoare triple {8023#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8027#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:37:00,011 INFO L273 TraceCheckUtils]: 25: Hoare triple {8027#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8031#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:37:00,011 INFO L273 TraceCheckUtils]: 26: Hoare triple {8031#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8035#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:37:00,012 INFO L273 TraceCheckUtils]: 27: Hoare triple {8035#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8039#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:37:00,013 INFO L273 TraceCheckUtils]: 28: Hoare triple {8039#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8043#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:37:00,014 INFO L273 TraceCheckUtils]: 29: Hoare triple {8043#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8047#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:37:00,015 INFO L273 TraceCheckUtils]: 30: Hoare triple {8047#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8051#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} is VALID [2018-11-14 17:37:00,015 INFO L273 TraceCheckUtils]: 31: Hoare triple {8051#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8055#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} is VALID [2018-11-14 17:37:00,016 INFO L273 TraceCheckUtils]: 32: Hoare triple {8055#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8059#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} is VALID [2018-11-14 17:37:00,017 INFO L273 TraceCheckUtils]: 33: Hoare triple {8059#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8063#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} is VALID [2018-11-14 17:37:00,018 INFO L273 TraceCheckUtils]: 34: Hoare triple {8063#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8067#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} is VALID [2018-11-14 17:37:00,019 INFO L273 TraceCheckUtils]: 35: Hoare triple {8067#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8071#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} is VALID [2018-11-14 17:37:00,020 INFO L273 TraceCheckUtils]: 36: Hoare triple {8071#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8075#(and (= 30 main_~main__i~0) (= main_~main__sum~0 435))} is VALID [2018-11-14 17:37:00,020 INFO L273 TraceCheckUtils]: 37: Hoare triple {8075#(and (= 30 main_~main__i~0) (= main_~main__sum~0 435))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8079#(and (= main_~main__sum~0 465) (= 31 main_~main__i~0))} is VALID [2018-11-14 17:37:00,021 INFO L273 TraceCheckUtils]: 38: Hoare triple {8079#(and (= main_~main__sum~0 465) (= 31 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8083#(and (<= 31 main_~main__n~0) (= main_~main__sum~0 496) (<= main_~main__i~0 32))} is VALID [2018-11-14 17:37:00,022 INFO L273 TraceCheckUtils]: 39: Hoare triple {8083#(and (<= 31 main_~main__n~0) (= main_~main__sum~0 496) (<= main_~main__i~0 32))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {8087#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:37:00,023 INFO L273 TraceCheckUtils]: 40: Hoare triple {8087#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {7934#false} is VALID [2018-11-14 17:37:00,023 INFO L273 TraceCheckUtils]: 41: Hoare triple {7934#false} assume !false; {7934#false} is VALID [2018-11-14 17:37:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:37:00,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:37:00,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-11-14 17:37:00,048 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 42 [2018-11-14 17:37:00,048 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:37:00,048 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 35 states. [2018-11-14 17:37:00,084 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:37:00,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-11-14 17:37:00,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-11-14 17:37:00,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-11-14 17:37:00,086 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 35 states. [2018-11-14 17:37:03,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:37:03,016 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-11-14 17:37:03,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-14 17:37:03,016 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 42 [2018-11-14 17:37:03,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:37:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-14 17:37:03,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2018-11-14 17:37:03,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-14 17:37:03,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2018-11-14 17:37:03,019 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 35 states and 47 transitions. [2018-11-14 17:37:03,065 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:37:03,066 INFO L225 Difference]: With dead ends: 47 [2018-11-14 17:37:03,067 INFO L226 Difference]: Without dead ends: 44 [2018-11-14 17:37:03,068 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=71, Invalid=1189, Unknown=0, NotChecked=0, Total=1260 [2018-11-14 17:37:03,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-14 17:37:03,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-14 17:37:03,181 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:37:03,181 INFO L82 GeneralOperation]: Start isEquivalent. First operand 44 states. Second operand 44 states. [2018-11-14 17:37:03,182 INFO L74 IsIncluded]: Start isIncluded. First operand 44 states. Second operand 44 states. [2018-11-14 17:37:03,182 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 44 states. [2018-11-14 17:37:03,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:37:03,183 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-11-14 17:37:03,183 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-11-14 17:37:03,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:37:03,184 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:37:03,184 INFO L74 IsIncluded]: Start isIncluded. First operand 44 states. Second operand 44 states. [2018-11-14 17:37:03,184 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 44 states. [2018-11-14 17:37:03,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:37:03,185 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-11-14 17:37:03,185 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-11-14 17:37:03,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:37:03,186 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:37:03,186 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:37:03,186 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:37:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-14 17:37:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-11-14 17:37:03,187 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-11-14 17:37:03,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:37:03,187 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-11-14 17:37:03,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-11-14 17:37:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-11-14 17:37:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-14 17:37:03,188 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:37:03,188 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:37:03,188 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:37:03,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:37:03,189 INFO L82 PathProgramCache]: Analyzing trace with hash 461349127, now seen corresponding path program 32 times [2018-11-14 17:37:03,189 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:37:03,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:37:03,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:37:03,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 17:37:03,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:37:03,197 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:37:03,197 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:37:03,197 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:37:03,210 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-14 17:37:03,259 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-14 17:37:03,259 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:37:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:37:03,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:37:04,146 INFO L256 TraceCheckUtils]: 0: Hoare triple {8348#true} call ULTIMATE.init(); {8348#true} is VALID [2018-11-14 17:37:04,146 INFO L273 TraceCheckUtils]: 1: Hoare triple {8348#true} ~__return_main~0 := 0;~__return_60~0 := 0; {8348#true} is VALID [2018-11-14 17:37:04,146 INFO L273 TraceCheckUtils]: 2: Hoare triple {8348#true} assume true; {8348#true} is VALID [2018-11-14 17:37:04,147 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {8348#true} {8348#true} #28#return; {8348#true} is VALID [2018-11-14 17:37:04,147 INFO L256 TraceCheckUtils]: 4: Hoare triple {8348#true} call #t~ret2 := main(); {8348#true} is VALID [2018-11-14 17:37:04,147 INFO L273 TraceCheckUtils]: 5: Hoare triple {8348#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {8348#true} is VALID [2018-11-14 17:37:04,147 INFO L273 TraceCheckUtils]: 6: Hoare triple {8348#true} assume !!(1 <= ~main__n~0); {8348#true} is VALID [2018-11-14 17:37:04,147 INFO L273 TraceCheckUtils]: 7: Hoare triple {8348#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {8374#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:37:04,148 INFO L273 TraceCheckUtils]: 8: Hoare triple {8374#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8378#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:37:04,149 INFO L273 TraceCheckUtils]: 9: Hoare triple {8378#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8382#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:37:04,149 INFO L273 TraceCheckUtils]: 10: Hoare triple {8382#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8386#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:37:04,150 INFO L273 TraceCheckUtils]: 11: Hoare triple {8386#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8390#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:37:04,150 INFO L273 TraceCheckUtils]: 12: Hoare triple {8390#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8394#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:37:04,151 INFO L273 TraceCheckUtils]: 13: Hoare triple {8394#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8398#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:37:04,152 INFO L273 TraceCheckUtils]: 14: Hoare triple {8398#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8402#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:37:04,152 INFO L273 TraceCheckUtils]: 15: Hoare triple {8402#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8406#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:37:04,153 INFO L273 TraceCheckUtils]: 16: Hoare triple {8406#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8410#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:37:04,154 INFO L273 TraceCheckUtils]: 17: Hoare triple {8410#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8414#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:37:04,155 INFO L273 TraceCheckUtils]: 18: Hoare triple {8414#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8418#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:37:04,156 INFO L273 TraceCheckUtils]: 19: Hoare triple {8418#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8422#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:37:04,157 INFO L273 TraceCheckUtils]: 20: Hoare triple {8422#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8426#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:37:04,158 INFO L273 TraceCheckUtils]: 21: Hoare triple {8426#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8430#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:37:04,158 INFO L273 TraceCheckUtils]: 22: Hoare triple {8430#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8434#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:37:04,159 INFO L273 TraceCheckUtils]: 23: Hoare triple {8434#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8438#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:37:04,161 INFO L273 TraceCheckUtils]: 24: Hoare triple {8438#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8442#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:37:04,162 INFO L273 TraceCheckUtils]: 25: Hoare triple {8442#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8446#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:37:04,163 INFO L273 TraceCheckUtils]: 26: Hoare triple {8446#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8450#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:37:04,164 INFO L273 TraceCheckUtils]: 27: Hoare triple {8450#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8454#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:37:04,165 INFO L273 TraceCheckUtils]: 28: Hoare triple {8454#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8458#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:37:04,166 INFO L273 TraceCheckUtils]: 29: Hoare triple {8458#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8462#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:37:04,166 INFO L273 TraceCheckUtils]: 30: Hoare triple {8462#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8466#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} is VALID [2018-11-14 17:37:04,167 INFO L273 TraceCheckUtils]: 31: Hoare triple {8466#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8470#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} is VALID [2018-11-14 17:37:04,168 INFO L273 TraceCheckUtils]: 32: Hoare triple {8470#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8474#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} is VALID [2018-11-14 17:37:04,169 INFO L273 TraceCheckUtils]: 33: Hoare triple {8474#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8478#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} is VALID [2018-11-14 17:37:04,170 INFO L273 TraceCheckUtils]: 34: Hoare triple {8478#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8482#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} is VALID [2018-11-14 17:37:04,171 INFO L273 TraceCheckUtils]: 35: Hoare triple {8482#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8486#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} is VALID [2018-11-14 17:37:04,172 INFO L273 TraceCheckUtils]: 36: Hoare triple {8486#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8490#(and (= 30 main_~main__i~0) (= main_~main__sum~0 435))} is VALID [2018-11-14 17:37:04,173 INFO L273 TraceCheckUtils]: 37: Hoare triple {8490#(and (= 30 main_~main__i~0) (= main_~main__sum~0 435))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8494#(and (= main_~main__sum~0 465) (= 31 main_~main__i~0))} is VALID [2018-11-14 17:37:04,174 INFO L273 TraceCheckUtils]: 38: Hoare triple {8494#(and (= main_~main__sum~0 465) (= 31 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8498#(and (= 32 main_~main__i~0) (= main_~main__sum~0 496))} is VALID [2018-11-14 17:37:04,174 INFO L273 TraceCheckUtils]: 39: Hoare triple {8498#(and (= 32 main_~main__i~0) (= main_~main__sum~0 496))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8502#(and (<= 32 main_~main__n~0) (<= main_~main__i~0 33) (= main_~main__sum~0 528))} is VALID [2018-11-14 17:37:04,176 INFO L273 TraceCheckUtils]: 40: Hoare triple {8502#(and (<= 32 main_~main__n~0) (<= main_~main__i~0 33) (= main_~main__sum~0 528))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {8506#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:37:04,176 INFO L273 TraceCheckUtils]: 41: Hoare triple {8506#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {8349#false} is VALID [2018-11-14 17:37:04,177 INFO L273 TraceCheckUtils]: 42: Hoare triple {8349#false} assume !false; {8349#false} is VALID [2018-11-14 17:37:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:37:04,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:37:04,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-11-14 17:37:04,204 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 43 [2018-11-14 17:37:04,204 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:37:04,204 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 36 states. [2018-11-14 17:37:04,277 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:37:04,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-14 17:37:04,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-14 17:37:04,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-11-14 17:37:04,278 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 36 states. [2018-11-14 17:37:07,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:37:07,448 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-11-14 17:37:07,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-14 17:37:07,448 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 43 [2018-11-14 17:37:07,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:37:07,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-14 17:37:07,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2018-11-14 17:37:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-14 17:37:07,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2018-11-14 17:37:07,451 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 36 states and 48 transitions. [2018-11-14 17:37:07,492 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:37:07,493 INFO L225 Difference]: With dead ends: 48 [2018-11-14 17:37:07,493 INFO L226 Difference]: Without dead ends: 45 [2018-11-14 17:37:07,495 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=1259, Unknown=0, NotChecked=0, Total=1332 [2018-11-14 17:37:07,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-14 17:37:07,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-14 17:37:07,589 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:37:07,589 INFO L82 GeneralOperation]: Start isEquivalent. First operand 45 states. Second operand 45 states. [2018-11-14 17:37:07,589 INFO L74 IsIncluded]: Start isIncluded. First operand 45 states. Second operand 45 states. [2018-11-14 17:37:07,590 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 45 states. [2018-11-14 17:37:07,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:37:07,591 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-11-14 17:37:07,591 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-11-14 17:37:07,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:37:07,592 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:37:07,592 INFO L74 IsIncluded]: Start isIncluded. First operand 45 states. Second operand 45 states. [2018-11-14 17:37:07,592 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 45 states. [2018-11-14 17:37:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:37:07,593 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-11-14 17:37:07,593 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-11-14 17:37:07,593 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:37:07,593 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:37:07,593 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:37:07,593 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:37:07,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-14 17:37:07,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-11-14 17:37:07,594 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-11-14 17:37:07,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:37:07,594 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-11-14 17:37:07,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-14 17:37:07,594 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-11-14 17:37:07,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-14 17:37:07,595 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:37:07,595 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:37:07,595 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:37:07,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:37:07,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1416858576, now seen corresponding path program 33 times [2018-11-14 17:37:07,595 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:37:07,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:37:07,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:37:07,596 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:37:07,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:37:07,604 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:37:07,604 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:37:07,604 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:37:07,622 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-14 17:37:08,647 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-11-14 17:37:08,647 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:37:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:37:08,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:37:09,693 INFO L256 TraceCheckUtils]: 0: Hoare triple {8773#true} call ULTIMATE.init(); {8773#true} is VALID [2018-11-14 17:37:09,693 INFO L273 TraceCheckUtils]: 1: Hoare triple {8773#true} ~__return_main~0 := 0;~__return_60~0 := 0; {8773#true} is VALID [2018-11-14 17:37:09,693 INFO L273 TraceCheckUtils]: 2: Hoare triple {8773#true} assume true; {8773#true} is VALID [2018-11-14 17:37:09,693 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {8773#true} {8773#true} #28#return; {8773#true} is VALID [2018-11-14 17:37:09,694 INFO L256 TraceCheckUtils]: 4: Hoare triple {8773#true} call #t~ret2 := main(); {8773#true} is VALID [2018-11-14 17:37:09,694 INFO L273 TraceCheckUtils]: 5: Hoare triple {8773#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {8773#true} is VALID [2018-11-14 17:37:09,694 INFO L273 TraceCheckUtils]: 6: Hoare triple {8773#true} assume !!(1 <= ~main__n~0); {8773#true} is VALID [2018-11-14 17:37:09,695 INFO L273 TraceCheckUtils]: 7: Hoare triple {8773#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {8799#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:37:09,695 INFO L273 TraceCheckUtils]: 8: Hoare triple {8799#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8803#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:37:09,696 INFO L273 TraceCheckUtils]: 9: Hoare triple {8803#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8807#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:37:09,696 INFO L273 TraceCheckUtils]: 10: Hoare triple {8807#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8811#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:37:09,697 INFO L273 TraceCheckUtils]: 11: Hoare triple {8811#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8815#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:37:09,698 INFO L273 TraceCheckUtils]: 12: Hoare triple {8815#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8819#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:37:09,699 INFO L273 TraceCheckUtils]: 13: Hoare triple {8819#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8823#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:37:09,700 INFO L273 TraceCheckUtils]: 14: Hoare triple {8823#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8827#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:37:09,700 INFO L273 TraceCheckUtils]: 15: Hoare triple {8827#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8831#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:37:09,701 INFO L273 TraceCheckUtils]: 16: Hoare triple {8831#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8835#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:37:09,702 INFO L273 TraceCheckUtils]: 17: Hoare triple {8835#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8839#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:37:09,703 INFO L273 TraceCheckUtils]: 18: Hoare triple {8839#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8843#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:37:09,704 INFO L273 TraceCheckUtils]: 19: Hoare triple {8843#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8847#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:37:09,705 INFO L273 TraceCheckUtils]: 20: Hoare triple {8847#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8851#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:37:09,706 INFO L273 TraceCheckUtils]: 21: Hoare triple {8851#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8855#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:37:09,707 INFO L273 TraceCheckUtils]: 22: Hoare triple {8855#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8859#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:37:09,707 INFO L273 TraceCheckUtils]: 23: Hoare triple {8859#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8863#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:37:09,708 INFO L273 TraceCheckUtils]: 24: Hoare triple {8863#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8867#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:37:09,709 INFO L273 TraceCheckUtils]: 25: Hoare triple {8867#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8871#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:37:09,710 INFO L273 TraceCheckUtils]: 26: Hoare triple {8871#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8875#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:37:09,711 INFO L273 TraceCheckUtils]: 27: Hoare triple {8875#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8879#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:37:09,712 INFO L273 TraceCheckUtils]: 28: Hoare triple {8879#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8883#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:37:09,713 INFO L273 TraceCheckUtils]: 29: Hoare triple {8883#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8887#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:37:09,713 INFO L273 TraceCheckUtils]: 30: Hoare triple {8887#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8891#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} is VALID [2018-11-14 17:37:09,714 INFO L273 TraceCheckUtils]: 31: Hoare triple {8891#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8895#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} is VALID [2018-11-14 17:37:09,715 INFO L273 TraceCheckUtils]: 32: Hoare triple {8895#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8899#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} is VALID [2018-11-14 17:37:09,716 INFO L273 TraceCheckUtils]: 33: Hoare triple {8899#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8903#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} is VALID [2018-11-14 17:37:09,717 INFO L273 TraceCheckUtils]: 34: Hoare triple {8903#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8907#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} is VALID [2018-11-14 17:37:09,718 INFO L273 TraceCheckUtils]: 35: Hoare triple {8907#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8911#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} is VALID [2018-11-14 17:37:09,719 INFO L273 TraceCheckUtils]: 36: Hoare triple {8911#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8915#(and (= 30 main_~main__i~0) (= main_~main__sum~0 435))} is VALID [2018-11-14 17:37:09,720 INFO L273 TraceCheckUtils]: 37: Hoare triple {8915#(and (= 30 main_~main__i~0) (= main_~main__sum~0 435))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8919#(and (= main_~main__sum~0 465) (= 31 main_~main__i~0))} is VALID [2018-11-14 17:37:09,720 INFO L273 TraceCheckUtils]: 38: Hoare triple {8919#(and (= main_~main__sum~0 465) (= 31 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8923#(and (= 32 main_~main__i~0) (= main_~main__sum~0 496))} is VALID [2018-11-14 17:37:09,721 INFO L273 TraceCheckUtils]: 39: Hoare triple {8923#(and (= 32 main_~main__i~0) (= main_~main__sum~0 496))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8927#(and (= 33 main_~main__i~0) (= main_~main__sum~0 528))} is VALID [2018-11-14 17:37:09,722 INFO L273 TraceCheckUtils]: 40: Hoare triple {8927#(and (= 33 main_~main__i~0) (= main_~main__sum~0 528))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {8931#(and (<= main_~main__i~0 34) (= main_~main__sum~0 561) (<= 33 main_~main__n~0))} is VALID [2018-11-14 17:37:09,723 INFO L273 TraceCheckUtils]: 41: Hoare triple {8931#(and (<= main_~main__i~0 34) (= main_~main__sum~0 561) (<= 33 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {8935#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:37:09,724 INFO L273 TraceCheckUtils]: 42: Hoare triple {8935#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {8774#false} is VALID [2018-11-14 17:37:09,724 INFO L273 TraceCheckUtils]: 43: Hoare triple {8774#false} assume !false; {8774#false} is VALID [2018-11-14 17:37:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:37:09,750 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:37:09,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-11-14 17:37:09,751 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 44 [2018-11-14 17:37:09,751 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:37:09,751 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 37 states. [2018-11-14 17:37:09,790 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:37:09,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-11-14 17:37:09,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-11-14 17:37:09,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-11-14 17:37:09,792 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 37 states. [2018-11-14 17:37:13,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:37:13,114 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-11-14 17:37:13,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-14 17:37:13,115 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 44 [2018-11-14 17:37:13,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:37:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-14 17:37:13,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2018-11-14 17:37:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-14 17:37:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2018-11-14 17:37:13,117 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 37 states and 49 transitions. [2018-11-14 17:37:13,171 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:37:13,172 INFO L225 Difference]: With dead ends: 49 [2018-11-14 17:37:13,172 INFO L226 Difference]: Without dead ends: 46 [2018-11-14 17:37:13,173 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=1331, Unknown=0, NotChecked=0, Total=1406 [2018-11-14 17:37:13,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-14 17:37:13,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-11-14 17:37:13,261 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:37:13,261 INFO L82 GeneralOperation]: Start isEquivalent. First operand 46 states. Second operand 46 states. [2018-11-14 17:37:13,261 INFO L74 IsIncluded]: Start isIncluded. First operand 46 states. Second operand 46 states. [2018-11-14 17:37:13,261 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 46 states. [2018-11-14 17:37:13,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:37:13,263 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-11-14 17:37:13,263 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-11-14 17:37:13,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:37:13,263 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:37:13,264 INFO L74 IsIncluded]: Start isIncluded. First operand 46 states. Second operand 46 states. [2018-11-14 17:37:13,264 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 46 states. [2018-11-14 17:37:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:37:13,265 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-11-14 17:37:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-11-14 17:37:13,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:37:13,265 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:37:13,265 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:37:13,266 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:37:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-14 17:37:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-11-14 17:37:13,267 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-11-14 17:37:13,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:37:13,267 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-11-14 17:37:13,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-11-14 17:37:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-11-14 17:37:13,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-14 17:37:13,268 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:37:13,268 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:37:13,268 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:37:13,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:37:13,268 INFO L82 PathProgramCache]: Analyzing trace with hash 972880423, now seen corresponding path program 34 times [2018-11-14 17:37:13,268 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:37:13,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:37:13,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:37:13,269 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:37:13,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:37:13,277 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:37:13,278 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:37:13,278 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:37:13,294 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-14 17:37:13,651 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-14 17:37:13,651 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:37:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:37:13,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:37:14,596 INFO L256 TraceCheckUtils]: 0: Hoare triple {9208#true} call ULTIMATE.init(); {9208#true} is VALID [2018-11-14 17:37:14,597 INFO L273 TraceCheckUtils]: 1: Hoare triple {9208#true} ~__return_main~0 := 0;~__return_60~0 := 0; {9208#true} is VALID [2018-11-14 17:37:14,597 INFO L273 TraceCheckUtils]: 2: Hoare triple {9208#true} assume true; {9208#true} is VALID [2018-11-14 17:37:14,597 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {9208#true} {9208#true} #28#return; {9208#true} is VALID [2018-11-14 17:37:14,597 INFO L256 TraceCheckUtils]: 4: Hoare triple {9208#true} call #t~ret2 := main(); {9208#true} is VALID [2018-11-14 17:37:14,597 INFO L273 TraceCheckUtils]: 5: Hoare triple {9208#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {9208#true} is VALID [2018-11-14 17:37:14,598 INFO L273 TraceCheckUtils]: 6: Hoare triple {9208#true} assume !!(1 <= ~main__n~0); {9208#true} is VALID [2018-11-14 17:37:14,598 INFO L273 TraceCheckUtils]: 7: Hoare triple {9208#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {9234#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:37:14,599 INFO L273 TraceCheckUtils]: 8: Hoare triple {9234#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9238#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:37:14,599 INFO L273 TraceCheckUtils]: 9: Hoare triple {9238#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9242#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:37:14,600 INFO L273 TraceCheckUtils]: 10: Hoare triple {9242#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9246#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:37:14,600 INFO L273 TraceCheckUtils]: 11: Hoare triple {9246#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9250#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:37:14,601 INFO L273 TraceCheckUtils]: 12: Hoare triple {9250#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9254#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:37:14,601 INFO L273 TraceCheckUtils]: 13: Hoare triple {9254#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9258#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:37:14,602 INFO L273 TraceCheckUtils]: 14: Hoare triple {9258#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9262#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:37:14,603 INFO L273 TraceCheckUtils]: 15: Hoare triple {9262#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9266#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:37:14,604 INFO L273 TraceCheckUtils]: 16: Hoare triple {9266#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9270#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:37:14,604 INFO L273 TraceCheckUtils]: 17: Hoare triple {9270#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9274#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:37:14,605 INFO L273 TraceCheckUtils]: 18: Hoare triple {9274#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9278#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:37:14,606 INFO L273 TraceCheckUtils]: 19: Hoare triple {9278#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9282#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:37:14,607 INFO L273 TraceCheckUtils]: 20: Hoare triple {9282#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9286#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:37:14,608 INFO L273 TraceCheckUtils]: 21: Hoare triple {9286#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9290#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:37:14,609 INFO L273 TraceCheckUtils]: 22: Hoare triple {9290#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9294#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:37:14,610 INFO L273 TraceCheckUtils]: 23: Hoare triple {9294#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9298#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:37:14,611 INFO L273 TraceCheckUtils]: 24: Hoare triple {9298#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9302#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:37:14,612 INFO L273 TraceCheckUtils]: 25: Hoare triple {9302#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9306#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:37:14,612 INFO L273 TraceCheckUtils]: 26: Hoare triple {9306#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9310#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:37:14,613 INFO L273 TraceCheckUtils]: 27: Hoare triple {9310#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9314#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:37:14,614 INFO L273 TraceCheckUtils]: 28: Hoare triple {9314#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9318#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:37:14,615 INFO L273 TraceCheckUtils]: 29: Hoare triple {9318#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9322#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:37:14,616 INFO L273 TraceCheckUtils]: 30: Hoare triple {9322#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9326#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} is VALID [2018-11-14 17:37:14,617 INFO L273 TraceCheckUtils]: 31: Hoare triple {9326#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9330#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} is VALID [2018-11-14 17:37:14,617 INFO L273 TraceCheckUtils]: 32: Hoare triple {9330#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9334#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} is VALID [2018-11-14 17:37:14,618 INFO L273 TraceCheckUtils]: 33: Hoare triple {9334#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9338#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} is VALID [2018-11-14 17:37:14,619 INFO L273 TraceCheckUtils]: 34: Hoare triple {9338#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9342#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} is VALID [2018-11-14 17:37:14,620 INFO L273 TraceCheckUtils]: 35: Hoare triple {9342#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9346#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} is VALID [2018-11-14 17:37:14,621 INFO L273 TraceCheckUtils]: 36: Hoare triple {9346#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9350#(and (= 30 main_~main__i~0) (= main_~main__sum~0 435))} is VALID [2018-11-14 17:37:14,622 INFO L273 TraceCheckUtils]: 37: Hoare triple {9350#(and (= 30 main_~main__i~0) (= main_~main__sum~0 435))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9354#(and (= main_~main__sum~0 465) (= 31 main_~main__i~0))} is VALID [2018-11-14 17:37:14,623 INFO L273 TraceCheckUtils]: 38: Hoare triple {9354#(and (= main_~main__sum~0 465) (= 31 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9358#(and (= 32 main_~main__i~0) (= main_~main__sum~0 496))} is VALID [2018-11-14 17:37:14,624 INFO L273 TraceCheckUtils]: 39: Hoare triple {9358#(and (= 32 main_~main__i~0) (= main_~main__sum~0 496))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9362#(and (= 33 main_~main__i~0) (= main_~main__sum~0 528))} is VALID [2018-11-14 17:37:14,624 INFO L273 TraceCheckUtils]: 40: Hoare triple {9362#(and (= 33 main_~main__i~0) (= main_~main__sum~0 528))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9366#(and (= 34 main_~main__i~0) (= main_~main__sum~0 561))} is VALID [2018-11-14 17:37:14,625 INFO L273 TraceCheckUtils]: 41: Hoare triple {9366#(and (= 34 main_~main__i~0) (= main_~main__sum~0 561))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9370#(and (<= main_~main__i~0 35) (<= 34 main_~main__n~0) (= main_~main__sum~0 595))} is VALID [2018-11-14 17:37:14,627 INFO L273 TraceCheckUtils]: 42: Hoare triple {9370#(and (<= main_~main__i~0 35) (<= 34 main_~main__n~0) (= main_~main__sum~0 595))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {9374#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:37:14,627 INFO L273 TraceCheckUtils]: 43: Hoare triple {9374#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {9209#false} is VALID [2018-11-14 17:37:14,628 INFO L273 TraceCheckUtils]: 44: Hoare triple {9209#false} assume !false; {9209#false} is VALID [2018-11-14 17:37:14,633 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:37:14,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:37:14,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-11-14 17:37:14,653 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 45 [2018-11-14 17:37:14,653 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:37:14,653 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 38 states. [2018-11-14 17:37:14,693 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:37:14,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-14 17:37:14,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-14 17:37:14,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-11-14 17:37:14,694 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 38 states. [2018-11-14 17:37:18,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:37:18,104 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-11-14 17:37:18,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-14 17:37:18,105 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 45 [2018-11-14 17:37:18,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 17:37:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-14 17:37:18,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2018-11-14 17:37:18,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-14 17:37:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2018-11-14 17:37:18,107 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 38 states and 50 transitions. [2018-11-14 17:37:18,147 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:37:18,148 INFO L225 Difference]: With dead ends: 50 [2018-11-14 17:37:18,148 INFO L226 Difference]: Without dead ends: 47 [2018-11-14 17:37:18,149 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=1405, Unknown=0, NotChecked=0, Total=1482 [2018-11-14 17:37:18,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-14 17:37:18,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-11-14 17:37:18,242 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 17:37:18,243 INFO L82 GeneralOperation]: Start isEquivalent. First operand 47 states. Second operand 47 states. [2018-11-14 17:37:18,243 INFO L74 IsIncluded]: Start isIncluded. First operand 47 states. Second operand 47 states. [2018-11-14 17:37:18,243 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 47 states. [2018-11-14 17:37:18,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:37:18,244 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-11-14 17:37:18,244 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-11-14 17:37:18,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:37:18,244 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:37:18,245 INFO L74 IsIncluded]: Start isIncluded. First operand 47 states. Second operand 47 states. [2018-11-14 17:37:18,245 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 47 states. [2018-11-14 17:37:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 17:37:18,245 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-11-14 17:37:18,245 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-11-14 17:37:18,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 17:37:18,246 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 17:37:18,246 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 17:37:18,246 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 17:37:18,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-14 17:37:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-11-14 17:37:18,246 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-11-14 17:37:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 17:37:18,247 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-11-14 17:37:18,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-14 17:37:18,247 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-11-14 17:37:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-14 17:37:18,247 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 17:37:18,247 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 17:37:18,248 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 17:37:18,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 17:37:18,248 INFO L82 PathProgramCache]: Analyzing trace with hash 94459568, now seen corresponding path program 35 times [2018-11-14 17:37:18,248 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 17:37:18,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 17:37:18,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:37:18,249 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-14 17:37:18,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 17:37:18,254 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-14 17:37:18,255 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-14 17:37:18,255 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-14 17:37:18,271 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-14 17:37:18,332 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-11-14 17:37:18,332 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 17:37:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 17:37:18,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 17:37:19,430 INFO L256 TraceCheckUtils]: 0: Hoare triple {9653#true} call ULTIMATE.init(); {9653#true} is VALID [2018-11-14 17:37:19,430 INFO L273 TraceCheckUtils]: 1: Hoare triple {9653#true} ~__return_main~0 := 0;~__return_60~0 := 0; {9653#true} is VALID [2018-11-14 17:37:19,430 INFO L273 TraceCheckUtils]: 2: Hoare triple {9653#true} assume true; {9653#true} is VALID [2018-11-14 17:37:19,430 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {9653#true} {9653#true} #28#return; {9653#true} is VALID [2018-11-14 17:37:19,431 INFO L256 TraceCheckUtils]: 4: Hoare triple {9653#true} call #t~ret2 := main(); {9653#true} is VALID [2018-11-14 17:37:19,431 INFO L273 TraceCheckUtils]: 5: Hoare triple {9653#true} havoc ~main__n~0;havoc ~main__sum~0;havoc ~main__i~0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~main__n~0 := #t~nondet1;havoc #t~nondet1; {9653#true} is VALID [2018-11-14 17:37:19,431 INFO L273 TraceCheckUtils]: 6: Hoare triple {9653#true} assume !!(1 <= ~main__n~0); {9653#true} is VALID [2018-11-14 17:37:19,432 INFO L273 TraceCheckUtils]: 7: Hoare triple {9653#true} assume !!(~main__n~0 <= 1000);~main__sum~0 := 0;~main__i~0 := 1; {9679#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} is VALID [2018-11-14 17:37:19,433 INFO L273 TraceCheckUtils]: 8: Hoare triple {9679#(and (= 1 main_~main__i~0) (= main_~main__sum~0 0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9683#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} is VALID [2018-11-14 17:37:19,434 INFO L273 TraceCheckUtils]: 9: Hoare triple {9683#(and (= main_~main__sum~0 1) (= (+ main_~main__sum~0 1) main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9687#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} is VALID [2018-11-14 17:37:19,434 INFO L273 TraceCheckUtils]: 10: Hoare triple {9687#(and (= main_~main__sum~0 3) (= 3 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9691#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} is VALID [2018-11-14 17:37:19,435 INFO L273 TraceCheckUtils]: 11: Hoare triple {9691#(and (= 4 main_~main__i~0) (= main_~main__sum~0 6))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9695#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} is VALID [2018-11-14 17:37:19,435 INFO L273 TraceCheckUtils]: 12: Hoare triple {9695#(and (= 5 main_~main__i~0) (= main_~main__sum~0 10))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9699#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} is VALID [2018-11-14 17:37:19,436 INFO L273 TraceCheckUtils]: 13: Hoare triple {9699#(and (= 6 main_~main__i~0) (= main_~main__sum~0 15))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9703#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} is VALID [2018-11-14 17:37:19,437 INFO L273 TraceCheckUtils]: 14: Hoare triple {9703#(and (= main_~main__sum~0 21) (= 7 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9707#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} is VALID [2018-11-14 17:37:19,438 INFO L273 TraceCheckUtils]: 15: Hoare triple {9707#(and (= 8 main_~main__i~0) (= main_~main__sum~0 28))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9711#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} is VALID [2018-11-14 17:37:19,439 INFO L273 TraceCheckUtils]: 16: Hoare triple {9711#(and (= 9 main_~main__i~0) (= main_~main__sum~0 36))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9715#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} is VALID [2018-11-14 17:37:19,439 INFO L273 TraceCheckUtils]: 17: Hoare triple {9715#(and (= 10 main_~main__i~0) (= main_~main__sum~0 45))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9719#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} is VALID [2018-11-14 17:37:19,440 INFO L273 TraceCheckUtils]: 18: Hoare triple {9719#(and (= main_~main__sum~0 55) (= 11 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9723#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} is VALID [2018-11-14 17:37:19,441 INFO L273 TraceCheckUtils]: 19: Hoare triple {9723#(and (= 12 main_~main__i~0) (= main_~main__sum~0 66))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9727#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} is VALID [2018-11-14 17:37:19,442 INFO L273 TraceCheckUtils]: 20: Hoare triple {9727#(and (= 13 main_~main__i~0) (= main_~main__sum~0 78))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9731#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} is VALID [2018-11-14 17:37:19,443 INFO L273 TraceCheckUtils]: 21: Hoare triple {9731#(and (= main_~main__sum~0 91) (= 14 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9735#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} is VALID [2018-11-14 17:37:19,444 INFO L273 TraceCheckUtils]: 22: Hoare triple {9735#(and (= main_~main__sum~0 105) (= 15 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9739#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} is VALID [2018-11-14 17:37:19,445 INFO L273 TraceCheckUtils]: 23: Hoare triple {9739#(and (= main_~main__sum~0 120) (= 16 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9743#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} is VALID [2018-11-14 17:37:19,446 INFO L273 TraceCheckUtils]: 24: Hoare triple {9743#(and (= main_~main__sum~0 136) (= 17 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9747#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} is VALID [2018-11-14 17:37:19,447 INFO L273 TraceCheckUtils]: 25: Hoare triple {9747#(and (= main_~main__sum~0 153) (= 18 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9751#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} is VALID [2018-11-14 17:37:19,448 INFO L273 TraceCheckUtils]: 26: Hoare triple {9751#(and (= 19 main_~main__i~0) (= main_~main__sum~0 171))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9755#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} is VALID [2018-11-14 17:37:19,448 INFO L273 TraceCheckUtils]: 27: Hoare triple {9755#(and (= main_~main__sum~0 190) (= 20 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9759#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} is VALID [2018-11-14 17:37:19,449 INFO L273 TraceCheckUtils]: 28: Hoare triple {9759#(and (= main_~main__sum~0 210) (= 21 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9763#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} is VALID [2018-11-14 17:37:19,450 INFO L273 TraceCheckUtils]: 29: Hoare triple {9763#(and (= main_~main__sum~0 231) (= 22 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9767#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} is VALID [2018-11-14 17:37:19,451 INFO L273 TraceCheckUtils]: 30: Hoare triple {9767#(and (= 23 main_~main__i~0) (= main_~main__sum~0 253))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9771#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} is VALID [2018-11-14 17:37:19,452 INFO L273 TraceCheckUtils]: 31: Hoare triple {9771#(and (= main_~main__sum~0 276) (= 24 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9775#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} is VALID [2018-11-14 17:37:19,453 INFO L273 TraceCheckUtils]: 32: Hoare triple {9775#(and (= main_~main__sum~0 300) (= 25 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9779#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} is VALID [2018-11-14 17:37:19,454 INFO L273 TraceCheckUtils]: 33: Hoare triple {9779#(and (= 26 main_~main__i~0) (= main_~main__sum~0 325))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9783#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} is VALID [2018-11-14 17:37:19,455 INFO L273 TraceCheckUtils]: 34: Hoare triple {9783#(and (= main_~main__sum~0 351) (= 27 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9787#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} is VALID [2018-11-14 17:37:19,455 INFO L273 TraceCheckUtils]: 35: Hoare triple {9787#(and (= 28 main_~main__i~0) (= main_~main__sum~0 378))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9791#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} is VALID [2018-11-14 17:37:19,456 INFO L273 TraceCheckUtils]: 36: Hoare triple {9791#(and (= 29 main_~main__i~0) (= main_~main__sum~0 406))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9795#(and (= 30 main_~main__i~0) (= main_~main__sum~0 435))} is VALID [2018-11-14 17:37:19,457 INFO L273 TraceCheckUtils]: 37: Hoare triple {9795#(and (= 30 main_~main__i~0) (= main_~main__sum~0 435))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9799#(and (= main_~main__sum~0 465) (= 31 main_~main__i~0))} is VALID [2018-11-14 17:37:19,458 INFO L273 TraceCheckUtils]: 38: Hoare triple {9799#(and (= main_~main__sum~0 465) (= 31 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9803#(and (= 32 main_~main__i~0) (= main_~main__sum~0 496))} is VALID [2018-11-14 17:37:19,459 INFO L273 TraceCheckUtils]: 39: Hoare triple {9803#(and (= 32 main_~main__i~0) (= main_~main__sum~0 496))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9807#(and (= 33 main_~main__i~0) (= main_~main__sum~0 528))} is VALID [2018-11-14 17:37:19,460 INFO L273 TraceCheckUtils]: 40: Hoare triple {9807#(and (= 33 main_~main__i~0) (= main_~main__sum~0 528))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9811#(and (= 34 main_~main__i~0) (= main_~main__sum~0 561))} is VALID [2018-11-14 17:37:19,461 INFO L273 TraceCheckUtils]: 41: Hoare triple {9811#(and (= 34 main_~main__i~0) (= main_~main__sum~0 561))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9815#(and (= main_~main__sum~0 595) (= 35 main_~main__i~0))} is VALID [2018-11-14 17:37:19,462 INFO L273 TraceCheckUtils]: 42: Hoare triple {9815#(and (= main_~main__sum~0 595) (= 35 main_~main__i~0))} assume ~main__i~0 <= ~main__n~0;~main__sum~0 := ~main__sum~0 + ~main__i~0;~main__i~0 := ~main__i~0 + 1; {9819#(and (<= main_~main__i~0 36) (= main_~main__sum~0 630) (<= 35 main_~main__n~0))} is VALID [2018-11-14 17:37:19,463 INFO L273 TraceCheckUtils]: 43: Hoare triple {9819#(and (<= main_~main__i~0 36) (= main_~main__sum~0 630) (<= 35 main_~main__n~0))} assume !(~main__i~0 <= ~main__n~0);havoc ~__tmp_1~0;~__tmp_1~0 := (if 2 * ~main__sum~0 == ~main__n~0 * (~main__n~0 + 1) then 1 else 0);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {9823#(= main_~__VERIFIER_assert__cond~0 1)} is VALID [2018-11-14 17:37:19,464 INFO L273 TraceCheckUtils]: 44: Hoare triple {9823#(= main_~__VERIFIER_assert__cond~0 1)} assume ~__VERIFIER_assert__cond~0 == 0; {9654#false} is VALID [2018-11-14 17:37:19,464 INFO L273 TraceCheckUtils]: 45: Hoare triple {9654#false} assume !false; {9654#false} is VALID [2018-11-14 17:37:19,486 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 17:37:19,507 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-14 17:37:19,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-11-14 17:37:19,507 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 46 [2018-11-14 17:37:19,507 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 17:37:19,507 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 39 states. [2018-11-14 17:37:19,550 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 17:37:19,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-14 17:37:19,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-14 17:37:19,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-11-14 17:37:19,552 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 39 states.